One of the big surprises of this project is the number of local unions created by the IWW in its first decades. So far we have identified 928 union locals, branches, and District Councils in more than 350 cities and towns in 38 states and territories of the United States and 5 Canadian provinces. This indicates that the organization had a greater geographic range than has been understood and we also learn from these data that the IWW was more active in its first few years than previously thought. More than one hundred locals had been established by 1907.
Click on the images (right) to see interactive maps and charts of the locals. Below is the full database organized by state/province. The database was compiled from lists of locals and dues records published at intervals in official publications of the IWW (Industrial Union Bulletin, Industrial Worker, Solidarity) and additional sources. Date ranges are not exact. "Active" signifies the range for which we have information, but a local may have been founded earlier and often endured longer. Here is more about the database and sources.
| State/Province | City/town | Local | Sources |
| Alaska | Fairbanks | Local No. 422 - (unknown) active 1908 | Industrial Union Bulletin, 05/23/1908 |
| Alaska | Nome | Local No. 264 - (unknown) active 1907 | Industrial Union Bulletin, 10/19/1907 |
| Alberta | Calgary | Local No. 79 - (unknown) active 1913 | Solidarity, 07/12/1913 |
| Alberta | Edmonton | Local No. 339 - (mixed local) Secretary: R. Bradshaw active 1914-1917 | Brissenden (1919) , 360 ; Branch Secretaries, Military Intelligence Files |
| Arizona | Bisbee | Local No. 106 - Metal Mine Workers' Industrial Union Local No. 106 (mining-metals) active 1917 | Solidarity, p.1,03.03.1917 ; |
| Arizona | Bisbee | Local No. 65 - (unknown) Secretary: Sebla Maxwell active 1916-1917 | Solidarity, p.1,07.22.1916 ; Branch Secretaries, Military Intelligence Files |
| Arizona | Globe | Local No. 273 - (unknown) Secretary: W. Welch active 1909-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 |
| Arizona | Oatman | Local No. 594 - Oatman Industrial Union (unknown) Secretary: Dick Highfield active 1915-1917 | Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| Arizona | Phoenix | I.U. 800 - Metal Mine Workers' Industrial Union No. 800 (mining-metals) Secretary: Grover H. Perry active 1917 | Solidarity, p.1,03.03.1917 ; Casefile 188032, Department of Justice Investigative Files, Part I: The Industrial Workers of the World, Research Collections in American Radicalism (microfilm), Reel 8. |
| Arizona | Phoenix | Local No. 272 - (unknown) Secretary: F. Velarde active 1907-1911 | Industrial Worker, 03/12/1910 -Industrial Worker, 09/09/1909 ; Industrial Worker, 01/05/1911 ; Industrial Union Bulletin, 08/31/1907 |
| Arizona | Phoenix | Local No. 272 branch 2 - Spanish branch (unknown) active 1910 | Solidarity, 07/09/1910 |
| Arizona | Prescott | Local No. 416 - (unknown) active 1908 | Industrial Union Bulletin, 02/08/1908 |
| Arizona | Tucson | Local No. 314 - (unknown) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Arizona | Local No. 3 - Arizona State Union of the Department of Mining (mining-metals) active 1906-1907 | Brissenden (1919) , 135 | |
| Arkansas | Texarkana | Local No. 591 - Texarkana Industrial Union (unknown) active 1915 | 1916 Convention Proceedings |
| B.C. | Cranbrook | Local No. 392 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| B.C. | Kamloops | Local No. 327 - (unknown) active 1913 | Solidarity, 07/19/1913 |
| B.C. | Lytton | Local No. 327 - (Railroad) Chartered 08/1911 active 1911-1912 | Vincent St. John (1917) ; Industrial Worker, 01/11/1912 |
| B.C. | Nelson | Local No. 182 - Hotel and Restaurant Workers' Industrial Union (Hotel and restaurant) Chartered 11/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| B.C. | Nelson | Local No. 525 - (unknown) Secretary: A.L. Elliott active 1907-1912 | Industrial Worker, 01/04/1912 ; Industrial Worker, 01/05/1911 ; Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 10/19/1907 |
| B.C. | Phoenix | Local No. 155 - (unknown) Secretary: G.W. Rogers active 1907-1911 | Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 08/24/1907 ; Industrial Union Bulletin, 02/08/1908 ; Industrial Worker, 01/05/1911 |
| B.C. | Prince Rupert | Local No. 326 - (Railroad) Secretary: A.E. Grant active 1909-1912 | Industrial Worker, 09/09/1909 ; Industrial Worker, 03/12/1910 ; Vincent St. John, The I.W.W.--Its History, Structure and Methods |
| B.C. | Rossland | Local No. 535 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| B.C. | Spences Bridge | Local No. 327 - Railroad Construction Workers' Industrial Union (Railroad Construction) Chartered 11/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| B.C. | Vancouver | Local No. 332 - (unknown) active 1914 | Brissenden (1919) , 360 |
| B.C. | Vancouver | Local No. 45 - (unknown) Secretary: James Sullivan active 1910-1911 | Industrial Worker, 03/12/1910 ; Industrial Worker, 01/05/1911 |
| B.C. | Vancouver | Local No. 526 - (Lumber handlers) active 1907-1908 | Industrial Union Bulletin, 10/19/1907 ; Industrial Union Bulletin, 02/08/1908 |
| B.C. | Victoria | Local No. 249 - (Transportation) Chartered 08/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| B.C. | Yale | Local No. 327 branch 2 - Railroad Construction Workers' Industrial Union (Railroad Construction) Chartered 11/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| B.C. | Vancouver | Local No. 322 - (unknown) Secretary: W.B. Smith active 1907-1915 | Solidarity, p.1,04.03.1915 ; ;Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 08/24/1907 ; Industrial Union Bulletin, 02/08/1908 ; Industrial Worker, 01/05/1911 |
| B.C. | Vancouver | unknown - (Public service) active 1909-1910 | Brissenden (1919) , 366 |
| B.C. | Victoria | Local No. 44 - (unknown) Secretary: Alice Harding active 1908-1911 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 02/08/1908 ; Industrial Worker, 01/05/1911 |
| B.C. | Victoria | Local No. 58 - (unknown) Chartered 08/1911 active 1911-1915 | Solidarity, p.4,05.01.1915 ; Industrial Worker, 01/11/1912 |
| California | Brawley | Local No. 437, branch 2 - (unknown) Secretary: J.H. Sanderson active 1910 | Industrial Worker, 03/12/1910 |
| California | Brawley | Local No. 439 - (mixed local) Secretary: Herman Kubow (1915), J. Miller (1917) active 1912-1917 | Brissenden (1919) , 360 ; Solidarity, p.4,05.29.1915 ; Branch Secretaries, Military Intelligence Files ; Industrial Worker, 01/11/1912 ; Solidarity, 09/27/1913 |
| California | Denver | Local No. 14 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| California | Eureka | Local No. 330 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| California | Eureka | Local No. 431 - (Lumber) Secretary: F. Wahander active 1914-1917 | Brissenden (1919) , 360 ; Solidarity, p.3,04.29.1916 ; Branch Secretaries, Military Intelligence Files |
| California | Eureka | Local No. 481 - Lumber Workers' Industrial Union No. 481 (Lumber) active 1916 | Solidarity, p.1,02.26.1916 ; |
| California | Fort Bragg | Local No. 426 - (unknown) Secretary: M. Fissinini active 1917 | Branch Secretaries, Military Intelligence Files |
| California | Fresno | A.W.O. 400 - Agricultural Workers' Organization No. 400 (Agriculture) active 1917 | Minute Books (or subsequent document titles), Casefile 188032, Department of Justice Investigative Files, Part I: The Industrial Workers of the World, Research Collections in American Radicalism (microfilm), Reel 8. |
| California | Fresno | Local No. 44 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| California | Fresno | Local No. 66 - (mixed local) Secretary: W.F. Little (1910), J. Manning (1917) active 1910-1915 | Brissenden (1919) , 360 ; Solidarity, p.1,04.24.1915 ; Industrial Worker, 03/12/1910 ; Branch Secretaries, Military Intelligence Files ; Solidarity, 09/20/1913 ; Industrial Worker, 01/04/1912 |
| California | Fruitvale | Local No. 233 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| California | Holtville | Local No. 437 - (unknown) active 1908-1911 | Industrial Worker, 01/05/1911 ; Industrial Union Bulletin, 05/23/1908 |
| California | Holtville | Local No. 437 - (unknown) Secretary: Peter LeBlanc active 1910 | Industrial Worker, 03/12/1910 |
| California | Imperial | Local No. 437, branch 4 - (unknown) Secretary: Wm. Stanley active 1910 | Industrial Worker, 03/12/1910 |
| California | Los Angeles | - Italian Propaganda League (Propaganda) active 1914 | 1916 Convention Proceedings |
| California | Los Angeles | Local No. 1 - (unknown) Secretary: George Paff active 1910-1911 | Industrial Worker, 03/12/1910 ; Industrial Worker, 01/05/1911 |
| California | Los Angeles | Local No. 103 - (mixed local) active 1914 | Brissenden (1919) , 360 |
| California | Los Angeles | Local No. 12 - (unknown) Secretary: Wm. Allen active 1907-1911 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 08/24/1907; Industrial Worker, 01/05/1911 |
| California | Los Angeles | Local No. 13 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| California | Los Angeles | Local No. 13 branch 1 - (unknown) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| California | Los Angeles | Local No. 18 - (unknown) Secretary: W.R. Sautter active 1910 | Industrial Worker, 03/12/1910 |
| California | Los Angeles | Local No. 524 - (unknown) active 1907 | Industrial Union Bulletin, 09/07/1907 |
| California | Los Angeles | Local No. 602 - Recruiting Local Industrial Union (Recruiting) active 1915 | 1916 Convention Proceedings |
| California | Los Angeles | Local No. 603 - (unknown) Secretary: John Trey active 1917 | Branch Secretaries, Military Intelligence Files |
| California | Los Angeles | Local No. 63 - (unknown) Secretary: Wm. Erickson active 1910-1911 | Industrial Worker, 03/12/1910 ; Industrial Worker, 01/05/1911 |
| California | Los Angeles | Propaganda League - (Propaganda) active 1914 | Brissenden (1919) , 360 ; 1916 Convention Proceedings, p.?? |
| California | Oakland | Local No. 150 - (unknown) active 1915 | Solidarity, p.2,07.03.1915 ; |
| California | Oakland | Local No. 174 - (mixed local) Secretary: G. Mays (1910), E.G. Flunkett (1917) active 1910-1917 | Brissenden (1919) , 360 ; Solidarity, p.2,07.03.1915 ; Industrial Worker, 03/12/1910 ; Branch Secretaries, Military Intelligence Files ; Industrial Worker, 01/05/1911 |
| California | Oakland | Local No. 222 branch 2 - (unknown) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| California | Oakland | Local No. 233 - (unknown) active 1907 | Industrial Union Bulletin, 11/16/1907 |
| California | Pittsburg | Local No. 449 - Seal Fishermen Industrial Union (Fishing) active 1916 | 1916 Convention Proceedings |
| California | Porterville | Local No. 313 Branch 1 - Metal Mine & Smelter Workers' Industrial Union (Metal workers) active 1916 | 1916 Convention Proceedings |
| California | Redding | Local No. 313 - (mixed local) Secretary: Dan Buckley (1916), Carl Kuhlmann (1917) active 1914-1917 | Brissenden (1919) , 360 ; Solidarity, p.4, Solidarity, p.3,03.20.1915, 03.04.1916 ; Branch Secretaries, Military Intelligence Files |
| California | Redding | Local No. 88 - (mixed local) Secretary: Carl Kuhlman active 1914-1917 | Brissenden (1919) , 360 ; Branch Secretaries, Military Intelligence Files |
| California | Redlands | Local No. 419 - (unknown) Secretary: R. Vere active 1908-1911 | Industrial Worker, 03/12/1910 ; Industrial Worker, 01/05/1911 ; Industrial Union Bulletin, 05/23/1908 |
| California | Redlands | unknown - (Agriculture) active 1909-1910 | Brissenden (1919) , 366 |
| California | Redondo | Local No. 246 - Marine Transport Workers' Industrial Union (Marine transport) Chartered 10/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| California | Redondo | Local No. 87 - (Transportation) Chartered 1907 active 1907-1908 | Industrial Union Bulletin, 08/31/1907 ; Industrial Union Bulletin, 02/08/1908 |
| California | Sacramento | Local No. 236 - (unknown) active 1907-1908 | Industrial Union Bulletin, 09/07/1907 ; Industrial Union Bulletin, 05/23/1908 |
| California | Sacramento | Local No. 334 - (mixed local) Secretary: C.L. Lambert active 1914-1917 | Brissenden (1919) , 360 ; Branch Secretaries, Military Intelligence Files |
| California | Sacramento | Local No. 444 - Agricultural Workers' Industrial Union (Agriculture) active 1915 | 1916 Convention Proceedings |
| California | Sacramento | Local No. 489 - (mixed local) Secretary: C.L. Lambert active 1914-1917 | Brissenden (1919) , 360 ; Branch Secretaries, Military Intelligence Files |
| California | Sacramento | Local No. 71 - (mixed local) Secretary: C.L. Lambert active 1914-1917 | Brissenden (1919) , 360 ; Branch Secretaries, Military Intelligence Files |
| California | San Diego | Local No. 12 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| California | San Diego | Local No. 13 - (unknown) Secretary: Benson Jaynes active 1910-1912 | Industrial Worker, 03/12/1910 ; Industrial Worker, 01/04/1912 |
| California | San Diego | Local No. 139 - (unknown) active 1907 | Industrial Union Bulletin, 10/26/1907 |
| California | San Diego | Local No. 245 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| California | San Diego | Local No. 373 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| California | San Diego | unknown - (Public service) active 1909-1910 | Brissenden (1919) , 366 |
| California | San Francisco | Local No. 107 - (mixed local) active 1914 | Brissenden (1919) , 360 |
| California | San Francisco | Local No. 147 - (Construction) active 1914-1915 | Brissenden (1919) , 360 |
| California | San Francisco | Local No. 173 - (mixed local) Secretary: J. Lebon active 1907-1917 | Brissenden (1919) , 360 ; Solidarity, p.4,01.23.1915, 01.06.1917 ; Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 07/13/1907 ; Industrial Union Bulletin, 02/08/1908 ; Industrial Worker, 01/05/1911 |
| California | San Francisco | Local No. 173 Branch 2 - (mixed local) Secretary: O. Banisie active 1914-1917 | Brissenden (1919) , 360 ; Branch Secretaries, Military Intelligence Files |
| California | San Francisco | Local No. 173 Latin branch 2 - (unknown) Chartered 08/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| California | San Francisco | Local No. 174, branch 4 - (unknown) Secretary: F. W. Newlander active 1917 | Branch Secretaries, Military Intelligence Files |
| California | San Francisco | Local No. 3 - (Garment) active 1914 | Brissenden (1919) , 360 |
| California | San Francisco | Local No. 31 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| California | San Francisco | Local No. 363 - (unknown) active 1907 | Industrial Union Bulletin, 06/22/1907 |
| California | San Francisco | Local No. 407 - Bakery Workers' Industrial Union (Baking) Chartered 09/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| California | San Francisco | Local No. 501 Branch 1 - Bulding Constructors' Industrial Union (Construction) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| California | San Francisco | Local No. 503 - (Construction) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| California | San Francisco | Local No. 57 - (unknown) active 1907 | Industrial Union Bulletin, 10/05/1907 |
| California | San Francisco | Local No. 8 - (Musicians) active 1914 | Brissenden (1919) , 360 |
| California | San Francisco | Local No. 9 - (Marine transport) Secretary: George Speed active 1914-1917 | Brissenden (1919) , 360 ; Solidarity, p.4,02.06.1915 ; Branch Secretaries, Military Intelligence Files |
| California | San Jose | Local No. 191 - (unknown) active 1907 | Industrial Union Bulletin, 10/19/1907 |
| California | San Jose | Local No. 489 - (unknown) Secretary: Walter Nudel active 1917 | Branch Secretaries, Military Intelligence Files |
| California | San Jose | Local No. 499 - Recruiting Local Industrial Union (Recruiting) active 1915 | 1916 Convention Proceedings |
| California | San Pedro | Local No. 195 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| California | San Pedro | Local No. 245 - (unknown) Secretary: Fred Herrmann active 1910-1913 | Industrial Worker, 03/12/1910 ; Solidarity, 09/06/1913 |
| California | San Pedro | Local No. 35 - (unknown) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| California | San Pedro | Local No. 533 - Transportation Workers' Industrial Union (Transportation) active 1907-1908 | Industrial Union Bulletin, 08/24/1907 ; Industrial Union Bulletin, 05/23/1908 |
| California | San Pedro | unknown - (Marine Transport) Secretary: Frank Wood active 1917 | Solidarity, p.1,01.13.1917 ; |
| California | Santa Cruz | Local No. 527 - (unknown) active 1907 | Industrial Union Bulletin, 12/21/1907 |
| California | Santa Cruz | Local No. 62 - (unknown) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| California | Stockton | - Women's Propaganda League (Propaganda) Secretary: Gertrude F. Cottle active 1914-1917 | Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| California | Stockton | Local No. 173 - (unknown) active 1912 | Industrial Worker, 01/11/1912 |
| California | Stockton | Local No. 5 - Steamboat & Barge Workers' Industrial Union (Marine transport) Secretary: Louis Moreau active 1914-1917 | Brissenden (1919) , 360 ; Solidarity, p.1,02.27.1915 ; Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| California | Stockton | Local No. 73 - (mixed local) Secretary: A. Strickland (1915), Alex Michael (1917) active 1914-1917 | Brissenden (1919) , 360 ; Solidarity, p.4,01.30.1915 ; Branch Secretaries, Military Intelligence Files |
| California | Taft | Local No. 453 - Oil Workers' Industrial Union (Oil) "not in good condition" in 1916 active 1913-1917 | Industrial Worker, 02/23/1913 ; 1916 Convention Proceedings- Solidarity, p.1,04.14.1917 ; |
| California | Tuolumne | Local No. 373 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| California | Vallejo | Local No. 283 - (unknown) active 1907-1908 | Industrial Union Bulletin, 02/08/1908 ; Industrial Union Bulletin, 08/31/1907 |
| Colorado | Buena Vista | Local No. 302 - (unknown) active 1907 | Industrial Union Bulletin, 08/17/1907 |
| Colorado | Colorado Springs | Local No. 237 - (unknown) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Colorado | Denver | - Industrial Council (District Council or grouped locals) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Colorado | Denver | Local No. 11 - (Transporation) active 1907-1908 | Industrial Union Bulletin, 11/07/1908 ; Industrial Union Bulletin, 08/31/1907 |
| Colorado | Denver | Local No. 113 - Domestic Workers' Industrial Union (Domestic) active 1916 | Solidarity, p.4,04.15.1916 ; 1916 Convention Proceedings, p.?? |
| Colorado | Denver | Local No. 125 - (unknown) active 1907-1908 | Industrial Union Bulletin, 02/08/1908 ; Industrial Union Bulletin, 08/24/1907 |
| Colorado | Denver | Local No. 144 - Power Workers (Utlities) active 1906-1907 | Brissenden (1919) , 134 |
| Colorado | Denver | Local No. 15 - (Blacksmiths and Helpers) active 1907-1908 | Industrial Union Bulletin, 08/24/1907 ; Industrial Union Bulletin, 11/07/1908 |
| Colorado | Denver | Local No. 26 - (mixed local) Secretary: Harry Weinstelu active 1910-1915 | Brissenden (1919) , 360 ; Solidarity, p.4,9.18.1915 ; Industrial Worker, 03/12/1910 ; Solidarity, 02/15/1913 |
| Colorado | Denver | Local No. 4 - (unknown) active 1908 | Industrial Union Bulletin, 10/24/1908 |
| Colorado | Denver | Local No. 404 - Domestic Workers' Industrial Union No. 404 (Domestic) active 1916 | Solidarity, p.4,04.15.1916 ; |
| Colorado | Denver | Local No. 488 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Colorado | Denver | Local No. 508 - (unknown) IUB received money from the "defunct" local active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Colorado | Firestone | Local No. 241 - Coal Miners' Industrial Union (Mining-coal) Secretary: L.C. Carlin active 1914-1917 | Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| Colorado | Grand Junction | Local No. 35 - (unknown) active 1905-1907 | Industrial Union Bulletin, 04/06/1907 |
| Colorado | Guffey | Local No. 555 - (unknown) active 1907 | Industrial Union Bulletin, 10/19/1907 |
| Colorado | Hudson | Local No. 180 - (unknown) active 1907 | Industrial Union Bulletin, 10/26/1907 |
| Colorado | Marble | Local No. 408 - (unknown) active 1908 | Industrial Union Bulletin, 02/08/1908 |
| Colorado | Silverton | Local No. 112 - (unknown) active 1907-1908 | Industrial Union Bulletin, 08/24/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Colorado | Telluride | Local No. 32 - (unknown) active 1907 | Industrial Union Bulletin, 10/26/1907 |
| Connecticut | Bridgeport | Local No. 112 - (mixed local) active 1914 | Brissenden (1919) , 360 |
| Connecticut | Bridgeport | Local No. 113 - Metal and Machinery Workers' Industrial Union (Metal and Machinery) Chartered 06/1907 active 1907 | Industrial Union Bulletin, 07/13/1907 |
| Connecticut | Bridgeport | Local No. 266 - (Mixed local) active 1907 | Industrial Union Bulletin, 10/26/1907 |
| Connecticut | Hartford | Local No. 160 - (unknown) active 1907 | Industrial Union Bulletin, 10/19/1907 |
| Connecticut | Hartford | Local No. 69 - (Machinists) active 1907-1914 | Brissenden (1919) , 360 ; Industrial Union Bulletin, 08/24/1907 |
| Connecticut | Kensington | Local No. 295 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Connecticut | Moosup | Local No. 303 - (Textile) Secretary: Edward Laperle active 1914-1917 | Brissenden (1919) , 360 ; Branch Secretaries, Military Intelligence Files |
| Connecticut | Mystic | Local No. 35 - (Textile) active 1914 | Brissenden (1919) , 360 |
| Connecticut | New Haven | Local No. 244 - Transportation Workers' Industrial Union (Transportation) active 1910-1911 | Solidarity, 12/17/1910 ; Industrial Worker, 01/05/1911 |
| Connecticut | New Haven | unknown - (Railroad) active 1909-1910 | Brissenden (1919) , 366 |
| Connecticut | New Haven | Local No. 176 - Silk Workers (Textile) active 1906-1907 | Brissenden (1919) , 135 |
| Connecticut | New Haven | Local No. 190 - Silk Workers (Textile) active 1906-1907 | Brissenden (1919) , 135 |
| Connecticut | New Haven | Local No. 313 - Paper Makers (Other manufacturing) active 1906-1907 | Brissenden (1919) , 135 |
| Connecticut | Norwalk | Local No. 535 - (Textile) Secretary: Joseph Makevich active 1914 - 1917 | Brissenden (1919) , 360 ; Branch Secretaries, Military Intelligence Files |
| Connecticut | Stafford Springs | Local No. 433 - (Textile) Secretary: S. Martinelli active 1909-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 |
| Connecticut | Waterbury | Local No. 187 - Clothing Workers' Industrial Union (Clothing) active 1910-1911 | Industrial Worker, 01/05/1911 ; Clothing |
| Connecticut | Waterbury | Local No. 310 - Metal & Machinery Workers' Industrial Union (Metal workers) Secretary: Joseph Minicuoci active 1915-1917 | Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| England | London | Local No. 328 - (unknown) active 1907-1908 | Industrial Union Bulletin, 08/24/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Florida | Apalachicola | Local No. 601 - Fish, Oyster & Shrimp Workers' Industrial Union (Fishing) Secretary: F. H. Pleeger active 1915-1917 | Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| Florida | Key West | Local No. 108 - (mixed local) Secretary: Santiago Garcia active 1914-1917 | Brissenden (1919) , 361 ; Branch Secretaries, Military Intelligence Files |
| Florida | Tampa | Local No. 102 - (Cigarmakers) active 1913-1914 | Brissenden (1919) , 361 ; Solidarity, 10/04/1913 |
| Florida | Ybor City | Local No. 103 - (unknown) Secretary: Salvador Martino active 1917 | Branch Secretaries, Military Intelligence Files |
| Hawaii | Honolulu | Local No. 126 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Hawaii | Honolulu | Local No. 136 - (Building Constructors) active 1910 | Solidarity, 08/13/1910 |
| Hawaii | Honolulu | Local No. 428 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Hawaii | Honolulu | unknown - (Agriculture) active 1909-1910 | Brissenden (1919) , 366 |
| Hawaii | Honolulu | unknown - (Construction) active 1909-1910 | Brissenden (1919) , 366 |
| Idaho | Boise | Local No. 59 - (unknown) Chartered 08/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| Idaho | Wallace | - Wallace Propaganda League (Propaganda) Secretary: Edward Bens active 1914-1917 | Branch Secretaries, Military Intelligence Files ; Brissenden (1919) , 361 |
| Illinois | Aurora | active 1916 | 1916 Convention Proceedings |
| Illinois | Belleville | Local No. 162 - (unknown) active 1907 | Industrial Union Bulletin, 04/06/1907 |
| Illinois | Blue Island | Local No. 17 - (Transportation) active 1907-1908 | Industrial Union Bulletin, 10/19/1907 ; Industrial Union Bulletin, 02/08/1908 ; Industrial Union Bulletin, 08/31/1907 |
| Illinois | Chicago | - Chicago Recruiting Union (mixed local) active 1919 | New Solidarity, 01/25/1919 |
| Illinois | Chicago | - Chicago Scandinavian Branch 2 (mixed local) active 1907 | Industrial Union Bulletin, 10/19/1907 |
| Illinois | Chicago | - Finnish Branch of Hotel, Restaurant, and Domestic Workers' Industrial Union (Hotel, Restaurant, and Domestic) active 1919 | New Solidarity, 03/29/1919 |
| Illinois | Chicago | - Finnish Recruiting Union (mixed local) active 1919 | New Solidarity, 03/29/1919 |
| Illinois | Chicago | - Swedish Branch of the Hotel, Restaurant, and Domestic Workers' Industrial Union (Hotel, Restaurant, and Domestic) active 1919 | New Solidarity, 04/05/1919 |
| Illinois | Chicago | I.U. 200 - Marine Transport Workers No. 200 (Marine Transport) active 1917 | |
| Illinois | Chicago | I.U. 300 - Metal and Machinery Workers' Industrial Union No. 300 (Metal workers) active 1916-1917 | Solidarity, p.1, Solidarity, p.3,04.29.1916, 07.14.1917 ; Casefile 188032, Department of Justice Investigative Files, Part I: The Industrial Workers of the World, Research Collections in American Radicalism (microfilm), Reel 8. ; Covention |
| Illinois | Chicago | I.U. 600 - Railroad Workers' Industrial Union No. 600 (Railroad) active 1915-1919 | Minute Books (or subsequent document titles), Casefile 188032, Department of Justice Investigative Files, Part I: The Industrial Workers of the World, Research Collections in American Radicalism (microfilm), Reel 8. ; 1916 Convention Proceedings, p.?? ; New Solidarity, 08/02/1919 |
| Illinois | Chicago | Local No. 1000 - Textile Workers' Industrial Union (Textile) active 1919 | New Solidarity, 05/17/1919 |
| Illinois | Chicago | Local No. 113 - (Machinists) active 1919 | New Solidarity, 08/02/2019 |
| Illinois | Chicago | Local No. 1200 - Printing and Publishing Workers' Industrial Union (Printing and publishing) active 1919 | New Solidarity, 05/17/1919 |
| Illinois | Chicago | Local No. 134 - (Machinists) active 1919 | New Solidarity, 08/02/2019 |
| Illinois | Chicago | Local No. 144 - (mixed local) Secretary: Joe Rada active 1911-1917 | Brissenden (1919) , 361 ; Branch Secretaries, Military Intelligence Files ; Industrial Worker, 01/05/1911 |
| Illinois | Chicago | Local No. 144 branch 2 - Packing House Workers' Industrial Union (Packing House Workers) Chartered 09/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| Illinois | Chicago | Local No. 144 Branch 3 - (Packing house workers) active 1911-1914 | Brissenden (1919) , 361 ; Industrial Worker, 01/11/1912 |
| Illinois | Chicago | Local No. 167 - (unknown) Secretary: A. Simpson active 1907-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 10/19/1907 |
| Illinois | Chicago | Local No. 229 - (Machinists) active 1919 | New Solidarity, 08/02/2019 |
| Illinois | Chicago | Local No. 23 - (Machinists) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Illinois | Chicago | Local No. 233 - (unknown) Secretary: F. Balzano active 1909 | Industrial Worker, 09/09/1909 |
| Illinois | Chicago | Local No. 250 - Railroad Workers' Industrial Union (Railroad) Chartered 10/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| Illinois | Chicago | Local No. 263 - Hotel and Restaurant Employees (Public Service) active 1906-1907 | Brissenden (1919) , 135 |
| Illinois | Chicago | Local No. 299 - Window Washers (Construction) active 1906-1907 | Brissenden (1919) , 135 ; Industrial Union Bulletin, 03/30/1907 |
| Illinois | Chicago | Local No. 3 - Metal and Machinery Workers' Industrial Union (Metal and machinery) Chartered 08/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| Illinois | Chicago | Local No. 3 Branch 2 - (mixed local) active 1914 | Brissenden (1919) , 361 |
| Illinois | Chicago | Local No. 303 - Macaroni Workers' Industrial Union No. 303 (Macaroni) active 1917 | Solidarity, p.3,05.05.1917 ; |
| Illinois | Chicago | Local No. 341 - (Railroad construction) active 1913-1915 | Brissenden (1919) , 361 ; Solidarity, p.4,01.30.1915 ; Solidarity, 08/02/1913 |
| Illinois | Chicago | Local No. 363 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Illinois | Chicago | Local No. 5 - (Capmakers) active 1919 | New Solidarity, 08/02/2019 |
| Illinois | Chicago | Local No. 52 - (Machinery) active 1907 | Industrial Union Bulletin, 07/13/1907 |
| Illinois | Chicago | Local No. 52 - (Machinists) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Illinois | Chicago | Local No. 526 - Amusement Workers' Industrial Union (Theatre) Chartered 10/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| Illinois | Chicago | Local No. 526 Theatre Branch 2 - (Theatrical Amusement Workers) Left AFL for IWW in 10/1913 active 1913 | Solidarity, 10/25/1913 |
| Illinois | Chicago | Local No. 531 branch 1 - (Clothing) active 1907 | Industrial Union Bulletin, 09/07/1907 |
| Illinois | Chicago | Local No. 538 - Chicago Ladies' Tailors Industrial Union (Tailors) active 1907 | Industrial Union Bulletin, 10/19/1907 |
| Illinois | Chicago | Local No. 539 branch 1 - Clothing Workers' Industrial Union (Clothing) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Illinois | Chicago | Local No. 550 - (Steel) active 1907 | Industrial Union Bulletin, 10/19/1907 |
| Illinois | Chicago | Local No. 573 - Construction Workers' Industrial Union (Construction) active 1919 | New Solidarity, 01/18/2019 |
| Illinois | Chicago | Local No. 593 - Chicago West Side Industrial Union (unknown) Secretary: J. Legutanke active 1914-1917 | Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| Illinois | Chicago | Local No. 604 - (Recruiting) active 1916 | 1916 Convention Proceedings |
| Illinois | Chicago | Local No. 608 - (Hospitality) active 1916 | Solidarity, p.3,06.24.1916 ; 1916 Convention Proceedings, p.?? |
| Illinois | Chicago | Local No. 609 - Packing House Workers' Industrial Union (Packing house) active 1916 | 1916 Convention Proceedings |
| Illinois | Chicago | Local No. 62 - (Machinists) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Illinois | Chicago | Local No. 65 - Jewish Branch no. 6 (unknown) active 1915 | Solidarity, p.4,01.30.1915 ; |
| Illinois | Chicago | Local No. 83 - Alemania Industrial Union (mixed local) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Illinois | Chicago | Local No. 83 - Bartenders and Waiters (Public Service) active 1906-1907 | Brissenden (1919) , 135 ; Industrial Union Bulletin, 08/31/1907 |
| Illinois | Chicago | Local No. 85 - (mixed local) Secretary: Ralph Chaplin active 1907-1915 | Brissenden (1919) , 361 ; Solidarity, p.2 Solidarity, p.3,03.06.1915, 10.23.1915 ; Industrial Union Bulletin, 03/02/1907 |
| Illinois | Chicago | Local No. 85 Branch 2 - (mixed local) Secretary: K. Rathje (1909), Geo. B. Stone (1917) active 1909-1917 | Brissenden (1919) , 361 - Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Branch Secretaries, Military Intelligence Files ; Industrial Worker, 01/04/1912 |
| Illinois | Chicago | Local No. 85 Branch 3 - (mixed local) Secretary: E. Janicki (1909), Peter P. Montville (1917) active 1909-1917 | Brissenden (1919) , 361- Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Branch Secretaries, Military Intelligence Files |
| Illinois | Chicago | Local No. 85 branch 4 - (unknown) Chartered 11/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| Illinois | Chicago | Local No. 85 Branch 5 - (mixed local) active 1914 | Brissenden (1919) , 361 |
| Illinois | Chicago | Local No. 85 Branch 6 - (mixed local) Secretary: B. Schatz active 1914-1917 | Brissenden (1919) , 361 ; Branch Secretaries, Military Intelligence Files |
| Illinois | Chicago | Local No. 85 Hungarian Branch 7 - (unknown) Secretary: Steve Gyürfe active 1915-1917 | Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| Illinois | Chicago | Local No. 85, branch 1 - (unknown) Secretary: R. Stromberg active 1909-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 |
| Illinois | Chicago | Propaganda League - (mixed local) Secretary: Paul Trice active 1910-1914 | Brissenden (1919) , 361 - Industrial Worker, 03/12/1910 |
| Illinois | Chicago | Local No. 85 Lithuanian Branch 8 - (unknown) active 1916 | 1916 Convention Proceedings |
| Illinois | Chicago | unknown - (Clothing) active 1909-1910 | Brissenden (1919) , 366 |
| Illinois | Chicago | unknown - (Show workers) active 1909-1910 | Brissenden (1919) , 366 |
| Illinois | Christopher | Local No. 556 - (unknown) active 1908 | Industrial Union Bulletin, 02/08/1908 |
| Illinois | Collinsville | Local No. 367 - (unknown) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Illinois | Dalton | Local No. 267 - Car Repair Workers' Industrial Union (Car repair) active 1916 | Covention |
| Illinois | Du Quion | Local No. 300 - (unknown) active 1907 | Industrial Union Bulletin, 12/21/1907 |
| Illinois | Du Quion | Local No. 503 Branch 1 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Illinois | East Chicago | unknown - (Steel workers) active 1909-1910 | Brissenden (1919) , 366 |
| Illinois | East St. Louis | Local No. 174 - (unknown) active 1907-1908 | Industrial Union Bulletin, 02/08/1908 ; Industrial Union Bulletin, 08/31/1907 |
| Illinois | Hegewisch | Local No. 302 - (RR car builders) active 1909-1910 | Brissenden (1919) , 366 ; Industrial Worker, 03/12/1910 |
| Illinois | LaSalle | Local No. 531 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Illinois | Peoria | Local No. 169 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Illinois | Peoria | Local No. 67 - (unknown) active 1913 | Solidarity, 04/26/1913 |
| Illinois | Pullman | Local No. 19 - Metal & Machinery Workers' Industrial Union (Metal and Machinery) active 1910 | Solidarity, 12/17/1910 |
| Illinois | Pullman | Local No. 500 - Transportation Workers' Industrial Union (Transportation) Secretary: W.D. Borger (1909), F. Wessesuski active 1907-1917 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Branch Secretaries, Military Intelligence Files ; Industrial Union Bulletin, 08/24/1907 ; Industrial Union Bulletin, 02/08/1908 ; Industrial Worker, 01/05/1911 |
| Illinois | Rockford | Local No. 1100 - Hotel, Restaurant, and Domestic Workers' Industrial Union (Hotel, Restaurant, and Domestic) active 1919 | New Solidarity, 07/19/1919 |
| Illinois | Rockford | Local No. 480 - Furniture Workers' Industrial Union (Furniture) Secretary: Cornelius Carlson active 1914-1919 | Brissenden (1919) , 361 ; Solidarity, p.4,05.29.1915 ; New Solidarity, 10/04/1919 |
| Illinois | Rockford | Local No. 480 Lithuanian Branch 2 - (unknown) active 1915 | 1916 Convention Proceedings |
| Illinois | Rockford | Local No. 480, branch 3 - (unknown) Secretary: Harrison Haight active 1917 | Branch Secretaries, Military Intelligence Files |
| Illinois | Rockford | Local No. 574 - Construction Workers' Industrial Union (Construction) active 1916 | Solidarity, p.4,05.06.1916 ; 1916 Convention Proceedings, p.?? |
| Illinois | Seatonville | Local No. 353 - (unknown) active 1907 | Industrial Union Bulletin, 12/21/1907 |
| Illinois | Seatonville | Local No. 353 branch 2 - (unknown) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Illinois | South Chicago | I.U. 303 Croation Branch - Steel Workers' Industrial Union (Steel) active 1910 | Solidarity, 11/12/1910 |
| Illinois | South Chicago | unknown - (Steel workers) active 1909-1910 | Brissenden (1919) , 366 |
| Illinois | Springfield | Local No. 172 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Illinois | Staunton | Local No 242 - Coal Miners' Industrial Union (Mining-coal) Secretary: Henry Szewezyk. Chartered 11/1911 active 1911-1917 | Branch Secretaries, Military Intelligence Files |
| Illinois | West Pullman | Local No. - (Metal workers) active 1909-1911 | Brissenden (1919) , 366 ; Local No. 19 |
| Indiana | Alexandria | Local No. 611 - (Recruiting) active 1916 | 1916 Convention Proceedings, |
| Indiana | Anderson | Local No. 201 - (unknown) Secretary: W.H. Barber active 1910 | Industrial Worker, 03/12/1910 |
| Indiana | Anderson | unknown - (Metal workers) active 1909-1910 | Brissenden (1919) , 366 |
| Indiana | Elwood | Local No. 306 - Iron, Steel & Tin Plate Workers' Industrial Union (Metal workers) active 1915 | 1916 Convention Proceedings |
| Indiana | Greenwood | Local No. 311 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Indiana | Hammond | Local No. 12 - (Transportation) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Indiana | Hammond | Local No. 301 - (unknown) Secretary: John Hermann active 1910 | Industrial Worker, 03/12/1910 |
| Indiana | Hammond | Local No. 600 - (unknown) Secretary: W. A. Cornland active 1917 | Branch Secretaries, Military Intelligence Files |
| Indiana | Hammond | unknown - (RR car builders) active 1909-1910 | Brissenden (1919) , 366 |
| Indiana | Indianapolis | Local No. 105 - (mixed local) active 1914 | Brissenden (1919) , 361 |
| Indiana | Indianapolis | Local No. 52 - (mixed local) active 1914 | Brissenden (1919) , 361 |
| Indiana | Indianapolis | Local No. 52 - (unknown) active 1913 | Solidarity, 02/01/1913 |
| Indiana | Indianapolis | Local no. 96 - (unknown) active 1907 | Industrial Union Bulletin, 06/22/1907 |
| Indiana | Linton | Local No. 138 - Coal Miners' Industrial Union (Mining-coal) active 1910 | Solidarity, 10/15/1910 |
| Indiana | Linton | Local No. 225 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Indiana | Mishawaka | Local No. 537 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Indiana | Muncie | unknown - (Metal workers) active 1909-1910 | Brissenden (1919) , 366 |
| Indiana | Muncle | Local No. 200 - (unknown) Secretary: Henry Hahn active 1910 | Industrial Worker, 03/12/1910 |
| Indiana | North Bend | Local No. 541 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Indiana | Plainfield | Local No. 260 - (unknown) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Indiana | Plainfield | Local No. 390 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Indiana | South Bend | Local No. 360 - (unknown) active 1907-1908 | Industrial Union Bulletin, 10/19/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Iowa | Des Moines | Local No. 573 - Construction Workers' Industrial Union (Construction) active 1919 | New Solidarity, 02/15/1919 |
| Iowa | Des Moines | Local No. 577 - (unknown) active 1913 | Solidarity, 09/06/1913 |
| Iowa | Sioux City | Local No. 129 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Iowa | Sioux City | Local No. 139 - (unknown) Secretary: Ben Limberger active 1909-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 |
| Iowa | Sioux City | Local No. 142 - (Packing House) Added to the IWW in December of 1916 active 1916 | Solidarity, p.4,12.16.1916 ; |
| Iowa | Sioux City | Local No. 400 - Agricultural Workers' Industrial Union (Agriculture) active 1919 | New Solidarity, 10/25/1919 |
| Iowa | Sioux City | Local No. 592 - Sioux City Industrial Union (Lumber) Secretary: Edmond Stafford (1915), Alex Miller (1917) active 1915-1917 | Solidarity 04.24.1915, 05.08.1915, 12.18.1915 ; Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| Iowa | Sioux City | Propaganda League - (mixed local) active 1914-1915 | Brissenden (1919) , 361 ; Solidarity, p.1, Solidarity p.2,01.30.1915 ; 1916 Convention Proceedings, p.?? |
| Iowa | Sioux City | unknown - (Construction) active 1909-1910 | Brissenden (1919) , 366 |
| Iowa | Valley Junction | Local No. 577 - (mixed local) Secretary: Charles Schmidt active 1914-1917 | Brissenden (1919) , 361 ; Solidarity, p.1, Solidarity, p.3, Solidarity p.2,01.16.1915, 01.23.1915, 05.29.1915 ; Branch Secretaries, Military Intelligence Files |
| Kansas | Chicopee | unknown - Miners (mining) active 1906-1907 | Brissenden (1919) , 135 |
| Kansas | Frontenac | Local No. 520 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Kansas | Hutchinson | Local No. 124 - (unknown) Chartered 06/1907 active 1907 | Industrial Union Bulletin, 09/07/1907 |
| Kansas | Kansas City | Local No. 146 - (mixed local) active 1914 | Brissenden (1919) , 361 |
| Kansas | Pittsburg | Local No. 212 - (unknown) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Kansas | Pittsburg | unknown - Miners (mining) active 1906-1907 | Brissenden (1919) , 135 |
| Kansas | Wichita | Local No. 205 - (unknown) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Kansas | Wichita | Local No. 224 - (Baking) active 1907 | Industrial Union Bulletin, 07/13/1907 |
| Kansas | Wichita | Local No. 548 - (Machinists) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Kansas | Wichita | Local No. 61 - (Brick workers) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Kentucky | Louisville | Local No. 31 - (unknown) active 1907-1908 | Industrial Union Bulletin, 08/24/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Kentucky | Louisville | Local No. 546 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Kentucky | Louisville | Local No. 73 - (unknown) active 1907 | Industrial Union Bulletin, 03/16/1907 |
| Louisiana | Alexandria | Local No. 282 - (Lumber) Secretary: A. L. Churchill active 1914-1917 | Brissenden (1919) , 361 ; Branch Secretaries, Military Intelligence Files |
| Louisiana | Lake Charles | Local No. 289 - (unknown) active 1907-1908 | Industrial Union Bulletin, 10/19/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Louisiana | Lake Charles | Local No. 289 branch 2 - (unknown) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Louisiana | New Orleans | Local No. 38 - (unknown) Secretary: F. Albera active 1907-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 03/30/1907 |
| Louisiana | New Orleans | Local No. 7 - (Marine transport) active 1914 | Brissenden (1919) , 361 |
| Maryland | Baltimore | I.U. 600 - Railroad Workers' Industrial Union (Railroad) active 1916 | 1916 Convention Proceedings |
| Maryland | Baltimore | Local No. 148 - (unknown) Secretary: Chas. Black active 1917 | Branch Secretaries, Military Intelligence Files |
| Maryland | Baltimore | Local No. 192 - (Textile) Secretary: Ignatius Legis active 1914-1917 | Brissenden (1919) , 362 Solidarity, p.3,06.24.1916 ; Branch Secretaries, Military Intelligence Files |
| Maryland | Baltimore | Local No. 192 Branch 2 - (Textile) Secretary: Jos. Naikus active 1914-1917 | Brissenden (1919) , 362 ; Branch Secretaries, Military Intelligence Files |
| Maryland | Baltimore | Local No. 192 Branch 5 - Ladies' Tailors (Clothing) active 1914 | 1916 Convention Proceedings |
| Maryland | Baltimore | Local No. 192, branch 1 - (unknown) Secretary: John Brunert active 1917 | Branch Secretaries, Military Intelligence Files |
| Maryland | Baltimore | Local No. 275 - (Tobacco) active 1914 | Brissenden (1919) , 362 |
| Maryland | Baltimore | Local No. 371 - (mixed local) Secretary: Alfredo Fratessi active 1914-1917 | Brissenden (1919) , 362 ; Branch Secretaries, Military Intelligence Files |
| Massachusetts | Boston | - Boston Propaganda League (Propaganda) active 1915 | 1916 Convention Proceedings |
| Massachusetts | Boston | - Italian Propaganda League (Propaganda) active 1914 | 1916 Convention Proceedings |
| Massachusetts | Boston | Local No. 165 - (unknown) active 1907-1908 | Industrial Union Bulletin, 10/26/1907 ; Industrial Union Bulletin, 02/08/1908 ; Industrial Union Bulletin, 08/24/1907 |
| Massachusetts | Boston | Local No. 2 - (Marine transport) active 1914 | Brissenden (1919) , 362 |
| Massachusetts | Boston | Local No. 324 - General Laborers' Industrial Union (mixed local) active 1915 | 1916 Convention Proceedings |
| Massachusetts | Boston | Local No. 384 - (unknown) Secretary: Michele D. Orfane active 1917 | Branch Secretaries, Military Intelligence Files |
| Massachusetts | Boston | Local No. 557 - (Piano) active 1912 | Vincent St. John (1917) |
| Massachusetts | Boston | Local No. 617 - (Shoes) Not officially recognized by the IWW. active 1916 | Solidarity, p.1,11.18.1916 ; |
| Massachusetts | Brookline | - Brookline Propaganda (Propaganda) Secretary: J. F. Mason active 1917 | Branch Secretaries, Military Intelligence Files |
| Massachusetts | Brookline | Propaganda League - (mixed local) Secretary: J F. Mason active 1914-1917 | Brissenden (1919) , 362 ; Branch Secretaries, Military Intelligence Files |
| Massachusetts | Cambridge | Local No. 165 - (unknown) active 1907 | Industrial Union Bulletin, 10/26/1907 |
| Massachusetts | Cambridge | Local No. 56 - (unknown) active 1907 | Industrial Union Bulletin, 11/16/1907 |
| Massachusetts | Chicopee Falls | Local No. 470 - Rubber Workers' Industrial Union (Rubber) active 1919 | New Solidarity, 02/15/1919 |
| Massachusetts | East Dedham | Local No. 265 - Railroad Shop Workers' Industrial Union (Railroad) Secretary: Salvatore D'Amico active 1915-1917 | Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| Massachusetts | East Taunton | Local No. 167 - Cotton Workers' Industrial Union (Agriculture) active 1915 | 1916 Convention Proceedings |
| Massachusetts | Fall River | Local No. 204 - (Textile) active 1914 | Brissenden (1919) , 362 |
| Massachusetts | Fall River | Local No. 206 - (unknown) Secretary: J. S. Weznek active 1917 | Branch Secretaries, Military Intelligence Files |
| Massachusetts | Fall River | Local No. 55 - (Textile) Secretary: Wm. Swindleburst active 1907-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 12/21/1907 |
| Massachusetts | Fall River | Local No. 55 - (unknown) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Massachusetts | Haverhill | Local No. 161 - (Textile) active 1912 | Vincent St. John (1917) |
| Massachusetts | Haverhill | Local No. 169 - (Textile) active 1912 | Vincent St. John (1917) |
| Massachusetts | Holyoke | Local No. 205 - (Textile) Secretary: W.J. Banorowsky active 1914-1915 | Brissenden (1919) , 362 ; Solidarity, p.3,08.14.1915 ; |
| Massachusetts | Holyoke | Local No. 206 - (unknown) Secretary: W.J. Bawerovsky active 1917 | Branch Secretaries, Military Intelligence Files |
| Massachusetts | Lawrence | Local No. 20 - (Textile) Secretary: Joseph Tuminowsky (1915) , C.G. Smith (1909), Seph Temineski (1917) active 1909-1917 | Brissenden (1919) , 362 ; Solidarity, p.4,04.03.1915 ; - Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Branch Secretaries, Military Intelligence Files ; Vincent St. John, The I.W.W.--Its History, Structure and Methods ; Industrial Union Bulletin, 09/28/1907 ; Industrial Union Bulletin, 02/08/1908 ; Industrial Worker, 01/05/1911 |
| Massachusetts | Lowell | Local No. 424 - (Textile) active 1911 | Industrial Worker, 01/05/1911 |
| Massachusetts | Lowell | Local No. 436 Greek Branch - (Textile) active 1910 | Solidarity, 12/17/1910 |
| Massachusetts | Lowell | Local No. 436 Lithuanian Branch 1 - (Textile) Secretary: G. Coppens active 1909-1917 | Brissenden (1919) , 362 - Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| Massachusetts | Lowell | Local No.436 Portuguese Branch 2 - (Textile) active 1916 | 1916 Convention Proceedings |
| Massachusetts | Lynn | Local No. 209 - (Machinists) active 1914 | Brissenden (1919) , 362 |
| Massachusetts | Malden | Local No. 190 - (Textile) active 1914 | Brissenden (1919) , 362 |
| Massachusetts | New Bedford | Local No. 157 - (Textile) Secretary: Wm. Yates (1909), Walter Barlow (1917) active 1907-1917 | Brissenden (1919) , 362 ; Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Branch Secretaries, Military Intelligence Files ; Industrial Worker, 01/05/1911 ; Industrial Union Bulletin, 08/31/1907 |
| Massachusetts | New Bedford | Local No. 157, Italian Branch - (Textile) active 1910 | Industrial Worker, 03/12/1910 |
| Massachusetts | Quincy | Local No. 34 Branch 2 - (mixed local) Secretary: Ottis F. Coffin active 1914-1917 | Brissenden (1919) , 362 ; Branch Secretaries, Military Intelligence Files |
| Massachusetts | Quincy | Local No. 517 - (unknown) active 1907-1908 | Industrial Union Bulletin, 08/24/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Massachusetts | Quincy Point | Local No. 34 Branch 1 - (mixed local) Secretary: Alan Cran active 1914-1917 | Brissenden (1919) , 362 ; Branch Secretaries, Military Intelligence Files |
| Massachusetts | Quincy Point | Local No. 34 Branch 2 - (mixed local) active 1914 | Brissenden (1919) , 362 |
| Massachusetts | Saxonville | Local No. 21 - (Textile) Chartered 1907 active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Massachusetts | South Barre | Local No. 358 - Textile Workers' Industrial Union (Textile) active 1916 | 1916 Convention Proceedings |
| Massachusetts | South Barre | Local No. 583 - (unknown) Secretary: Ettor Gerundo active 1917 | Branch Secretaries, Military Intelligence Files |
| Massachusetts | Springfield | - Springfield Recruiting Union (mixed local) active 1919 | New Solidarity, 02/15/1919 |
| Massachusetts | Vineyard Haven | - (unknown) Chartered 06/1907 active 1907 | Industrial Union Bulletin, 09/07/1907 |
| Massachusetts | Wakefield | Local No. 98 - (unknown) active 1907-1908 | Industrial Union Bulletin, 10/26/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Massachusetts | Worcester | Local No. 320 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Massachusetts | Worcester | Local No. 60 - (unknown) active 1907 | Industrial Union Bulletin, 11/16/1907 |
| Michigan | Detroit | Local No. 1100 - Hotel, Restaurant, and Domestic Workers' Industrial Union (Hotel, Restaurant, and Domestic) active 1919 | New Solidarity, 07/19/1919 |
| Michigan | Detroit | Local No. 117 - Shoe Workers' Industrial Union (Shoes) Established in early 1916. Secretary: A. Cohen active 1916-1917 |
Solidarity, p.1,02.12.1916 ; Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| Michigan | Detroit | Local No. 159 - (unknown) active 1907-1908 | Industrial Union Bulletin, 08/24/1907 |
| Michigan | Detroit | Local No. 16 - (Automobile) active 1911-1915 | Brissenden (1919) , 362 ; Solidarity, p.2,01.16.1915, 07.03.1915 ; Solidarity, 01/25/1913 ; Industrial Worker, 01/05/1911 |
| Michigan | Detroit | Local No. 16 Branch 1 - (mixed local) Secretary: B. F. Boyle active 1914-1917 | Brissenden (1919) , 362 ; Branch Secretaries, Military Intelligence Files |
| Michigan | Detroit | Local No. 16 Branch 2 - (Automobile) Chartered 10/1911 active 1911-1914 | Brissenden (1919) , 362 ; Industrial Worker, 01/11/1912 |
| Michigan | Detroit | Local No. 16 Branch 3 - (mixed local) Secretary: John Lasdauskas active 1914-1917 | Brissenden (1919) , 362 ; Branch Secretaries, Military Intelligence Files |
| Michigan | Detroit | Local No. 25 - (Car and foundry workers) active 1907 | Industrial Union Bulletin, 09/07/1907 |
| Michigan | Detroit | Local No. 26 - (Automobile) active 1914 | Brissenden (1919) , 362 |
| Michigan | Detroit | Local No. 300 - Metal and Machinery Workers' Industrial Union (Metal and machinery) active 1919 | New Solidarity, 01/18/1919 |
| Michigan | Detroit | Local No. 4 - (Machinists) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Michigan | Detroit | Local No. 464 - Alkali & Chemical Workers' Industrial Union (Chemical) active 1916 | 1916 Convention Proceedings |
| Michigan | Detroit | Local No. 551 - (Automobile) active 1914 | Brissenden (1919) , 362 |
| Michigan | Detroit | Local No. 551 Branch 1 - (Automobile) active 1914 | Brissenden (1919) , 362 |
| Michigan | Detroit | Local No. 551 Branch 2 - (Automobile) active 1914 | Brissenden (1919) , 362 |
| Michigan | Detroit | Local No. 603 - (Food) active 1914 | Brissenden (1919) , 362 |
| Michigan | Detroit | Local No. 62 - (mixed local) active 1910-1914 | Brissenden (1919) , 362 ; Solidarity 10/15/1910 ; Local No. 62 - (unknown) active 1911 |
| Michigan | Detroit | Local No. 62 branch 2 - (unknown) Hungarian active 1911-1912 | Industrial Worker, 01/11/1912 |
| Michigan | Detroit | Local No. 63 branch 2 - (unknown) Secretary: John Barthak active 1917 | Branch Secretaries, Military Intelligence Files |
| Michigan | Grand Rapids | Local No. 202 - (Furniture) active 1910 | Solidarity, 08/13/1910 |
| Michigan | Grand Rapids | Local No. 292 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Michigan | Jackson | Local No. 4 - Metal and Machinery Workers' Industrial Union (Metal and Machinery) active 1910 | Solidarity, 07/09/1910 |
| Michigan | Jackson | Local No. 605 - (Recruiting) active 1916 | 1916 Convention Proceedings |
| Michigan | Jackson | unknown - (Metal workers) active 1909-1910 | Brissenden (1919) , 366 |
| Michigan | Negaunee | unknown - (mixed local) active 1909-1910 | Brissenden (1919) , 366 |
| Minnesota | Aurora | Local No. 490 - (mining-metals) active 1916 | 1916 Convention Proceedings |
| Minnesota | Biwabik | Local No. 490 - Biwabik Branch (mining-metals) active 1916 | 1916 Convention Proceedings |
| Minnesota | Bovey | Local No. 529 - (unknown) active 1907 | Industrial Union Bulletin, 10/19/1907 ; Industrial Union Bulletin, 08/24/1907 |
| Minnesota | Buhl | Local No. 490 - Buhl Branch (mining-metals) active 1916 | 1916 Convention Proceedings |
| Minnesota | Chisholm | Local No. 407 - (unknown) active 1908 | Industrial Union Bulletin, 02/08/1908 |
| Minnesota | Chisholm | Local No. 490 - Chisholm Branch (mining-metals) active 1916 | 1916 Convention Proceedings |
| Minnesota | Crosby | Local No. 490 - Crosby Branch (mining-metals) active 1916 | 1916 Convention Proceedings |
| Minnesota | Dawson | Local No. 76 - (unknown) active 1907-1908 | Industrial Union Bulletin, 10/19/1907; Industrial Union Bulletin, 02/08/1908 |
| Minnesota | Deer River | Local No. 424 - (unknown) Secretary: W. Free active 1909-1910 | Industrial Worker, 03/12/1910 -Industrial Worker, 09/09/1909 |
| Minnesota | Deer River | unknown - (Lumber) active 1909-1910 | Brissenden (1919) , 366 |
| Minnesota | Duluth | Local No. 1100 - Hotel, Restaurant, and Domestic Workers' Industrial Union (Hotel, Restaurant, and Domestic) active 1919 | New Solidarity, 07/19/1919 |
| Minnesota | Duluth | Local No. 126 - (mixed local) Secretary: Elmer Stonewall active 1914-1917 | Brissenden (1919) , 362 ; Branch Secretaries, Military Intelligence Files |
| Minnesota | Duluth | Local No. 245 - Marine Transport Workers' Industrial Union (Marine transport) active 1916 | Solidarity, p.1,08.26.1916 ; 1916 Convention Proceedings, p.?? |
| Minnesota | Duluth | Local No. 351 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Minnesota | Duluth | Local No. 490 - Metal Mine Workers' Industrial Union (mining-metals) The Mesabi Range strike grew this local into five branches and continued Finnish radical activity in the area drew an additional 5000 members in 1917. active 1916-1917 | Brenner, Day, Ness 466, 469 ; Solidarity, p.4,02.19.1916 ; Casefile 188032, Department of Justice Investigative Files, Part I: The Industrial Workers of the World, Research Collections in American Radicalism (microfilm), Reel 8. |
| Minnesota | Duluth | Local No. 68 - (unknown) active 1911-1913 | Solidarity, 06/28/1913 ; Industrial Worker, 01/05/1911 |
| Minnesota | Duluth | Local No. 69 - (unknown) active 1913 | Solidarity, 10/11/1913 |
| Minnesota | Eveleth | Local No. 490 - Eveleth Branch (mining-metals) active 1916 | 1916 Convention Proceedings |
| Minnesota | Gilbert | Local No. 490 - Gilbert Branch (mining-metals) active 1916 | 1916 Convention Proceedings |
| Minnesota | Hibbing | Local No. 47 - (Public service) active 1907-1908 | Industrial Union Bulletin, 11/16/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Minnesota | Hibbing | Local No. 490 - Hibbing Branch (mining-metals) active 1916 | 1916 Convention Proceedings |
| Minnesota | Hibbing | Local No. 552 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Minnesota | Kinney | Local No. 490 - Kinney Branch (mining-metals) active 1916 | 1916 Convention Proceedings |
| Minnesota | Minneapolis | - Scandinavian Propaganda League (Propaganda) Secretary: Helge Millburg active 1917 | Branch Secretaries, Military Intelligence Files |
| Minnesota | Minneapolis | A.W.O. 400 - Agricultural Workers' Organization No. 400 (Agriculture) W. T. Nef active 1917 | Minute Books (or subsequent document titles), Casefile 188032, Department of Justice Investigative Files, Part I: The Industrial Workers of the World, Research Collections in American Radicalism (microfilm), Reel 8. ; Branch Secretaries, Military Intelligence Files |
| Minnesota | Minneapolis | Local No. 137 - (unknown) Secretary: Peter Johnson active 1910-1912 | Industrial Worker, 03/12/1910 ; Industrial Worker, 01/05/1911; Industrial Worker, 01/04/1912 |
| Minnesota | Minneapolis | Local No. 14 - (Transportation) active 1907-1908 | Industrial Union Bulletin, 08/31/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Minnesota | Minneapolis | Local No. 221 - (mixed local) active 1913-1914 | Brissenden (1919) , 362 ; Solidarity, 10/11/1913 |
| Minnesota | Minneapolis | Local No. 356 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Minnesota | Minneapolis | Local No. 383 - (unknown) Polish active 1910-1911 | Solidarity, 08/13/1910 ; Industrial Worker, 01/05/1911 |
| Minnesota | Minneapolis | Local No. 400 - (Metal and machinery) active 1907 | Industrial Union Bulletin, 11/16/1907 |
| Minnesota | Minneapolis | Local No. 490 - Metal Mine Workers' Industrial Union (mining-metals) active 1916 | 1916 Convention Proceedings |
| Minnesota | Minneapolis | Local No. 500 - (Transportation) active 1914 | Brissenden (1919) , 362 |
| Minnesota | Minneapolis | Local No. 573 - Construction Workers' Industrial Union (Construction) active 1916-1917 | Minute Books (or subsequent document titles), Casefile 188032, Department of Justice Investigative Files, Part I: The Industrial Workers of the World, Research Collections in American Radicalism (microfilm), Reel 8. ; 1916 Convention Proceedings, p.?? |
| Minnesota | Minneapolis | Local No. 600 - Railroad Workers' Industrial Union (Railroad) active 1919 | New Solidarity, 11/08/1919 |
| Minnesota | Minneapolis | Local No. 64 - (mixed local) Secretary: Charles Gray (1915), C.H. Fisher (1909), C.W. Anderson (1917) active 1909-1917 | Brissenden (1919) , 362 ; Solidarity, p.4, Solidarity, p.1,03.20.1915, 03.27.1915 ; - Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Branch Secretaries, Military Intelligence Files ; Industrial Worker, 01/05/1911; Industrial Worker, 01/04/1912 ; Industrial Union Bulletin, 08/24/1907 |
| Minnesota | Minneapolis | Local No. 64 Branch 2 - (unknown) active 1910 | Solidarity, 08/13/1910 |
| Minnesota | Northfield | Local No. 176 - (unknown) active 1907 | Industrial Union Bulletin, 11/16/1907 |
| Minnesota | St. Paul | Local No. 307 - (mixed local) active 1906-914 | Brissenden (1919) , 135, 362 ; Industrial Union Bulletin, 03/30/1907 |
| Minnesota | Virginia | Local No. 490 - Virginia Branch (mining-metals) active 1916 | 1916 Convention Proceedings |
| Minnesota | Virginia | Local No. 800 - Metal Mine Workers' Industrial Union (mining-metals) active 1919 | New Solidarity, 01/25/1919 |
| Missouri | Bates | Local No. 409 - (unknown) active 1908 | Industrial Union Bulletin, 02/08/1908 |
| Missouri | Flat River | unknown - Retail Clerks Union (Retail) active 1906-1907 | Brissenden (1919) , 134 |
| Missouri | Kansas City | - Kansas City Propaganda League (unknown) Secretary: Hugh M. Scott active 1909 | Industrial Worker, 09/09/1909 |
| Missouri | Kansas City | I.U. 400 - Agricultural Workers' Organization (Agriculture) active 1915 | Solidarity, p.1,05.22.1915 ; |
| Missouri | Kansas City | Local No. 193 - Clothing Workers' Industrial Union (Clothing) Chartered 09/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| Missouri | Kansas City | Local No. 54 - (unknown) active 1907 | Industrial Union Bulletin, 11/16/1907 |
| Missouri | Kansas City | Local No. 61 - (mixed local) Secretary: N.E. McGuskin active 1912-1917 | Brissenden (1919) , 363 ; Solidarity, p.4, Solidarity, p.1, Solidarity, p.1,01.30.1915, 04.03.1915, 10.16.1915 ; Branch Secretaries, Military Intelligence Files ; Solidarity, 08/23/1913 ; Industrial Worker, 01/04/1912 |
| Missouri | Kansas City | Local No. 8 - (unknown) active 1907-1908 | Industrial Union Bulletin, 08/24/1907 ; Industrial Union Bulletin, 04/18/1908 |
| Missouri | St. Joseph | Local No. 18 - (unknown) active 1907 | Industrial Union Bulletin, 10/19/1907 |
| Missouri | St. Louis | Local No. 188 - (unknown) Secretary: B. Blumoff active 1907-1911 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 10/19/1907 ; Industrial Worker, 01/05/1911 |
| Missouri | St. Louis | Local No. 188, branch 2 - (unknown) Secretary: I. Goldberg active 1910 | Industrial Worker, 03/12/1910 |
| Missouri | St. Louis | Local No. 413 - (unknown) Secretary: W.A. Hoffman active 1909-1911 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Worker, 01/05/1911 |
| Missouri | St. Louis | Local No. 84 - (unknown) Secretary: Julius Pollock active 1907-1913 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 08/24/1907 ; Industrial Union Bulletin, 02/08/1908 ; Industrial Worker, 01/05/1911 ; Industrial Worker, 01/04/1912 ; Solidarity, 03/15/1913 |
| Missouri | St.Louis | Local No. 101 - (mixed local) active 1914 | Brissenden (1919) , 363 |
| Missouri | St.Louis | Local No. 84 - (mixed local) Secretary: A. Ross (1915), Frank Vanne (1917) active 1914-1917 | Brissenden (1919) , 363 ; Solidarity, p.3, Solidarity, p.3,10.02.1915, 12.11.1915 ; Branch Secretaries, Military Intelligence Files |
| Missouri | St.Louis | Local No. 90 - Shoemakers (Shoes) active 1906-1907 | Brissenden (1919) , 135 |
| Missouri | St.Louis | unknown - (Clothing) active 1909-1910 | Brissenden (1919) , 366 |
| Missouri | Webb City | Local No. 603 - Metal, Mine & Smelter Workers' Industrial Union (Metal workers) Secretary: James Riley active 1916-1917 | Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| Montana | Anaconda | Local No. 105 - (unknown) Secretary: John Byrne active 1907-1911 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 07/13/1907 ; Industrial Union Bulletin, 09/07/1907 ; Industrial Worker, 01/05/1911 |
| Montana | Anaconda | Local No. 142 - (unknown) Secretary: J.F. Schroeder active 1909-1911 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Worker, 01/05/1911 |
| Montana | Anaconda | unknown - (mixed local) active 1909-1910 | Brissenden (1919) , 366 |
| Montana | Billings | Local No. 39 - (unknown) Secretary: Ralph H. Belcher active 1909-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 |
| Montana | Butte | - Delivery Workers' Industrial Union (Delivery) active 1907 | Industrial Union Bulletin, 11/16/1907 |
| Montana | Butte | Local No. 405 - (unknown) Secretary: F.C. Meyer active 1908-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 05/23/1908 |
| Montana | Butte | Local No. 411 - (unknown) active 1907 | Industrial Union Bulletin, 12/21/1907 |
| Montana | Butte | Local No. 465 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Montana | Butte | Local No. 5 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Montana | Butte | Propaganda League - (mixed local) Secretary: Ed. Ross (1917), Paul Cooney (1910) active 1910-1917 | Brissenden (1919) , 363 ; Branch Secretaries, Military Intelligence Files ; Industrial Worker, 03/12/1910 |
| Montana | Butte | unknown - (Baking) active 1909-1910 | Brissenden (1919) , 366 |
| Montana | Butte | unknown - Bakery Workers (Baking) active 1906-1907 | Brissenden (1919) , 135 |
| Montana | Darby | Local No. 33 - (unknown) Secretary: Pete Brown active 1909 | Industrial Worker, 09/09/1909 |
| Montana | Great Falls | Local No. 41 - (unknown) Secretary: J.W. Bailey active 1909-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 |
| Montana | Great Falls | Local No. 571 - (mixed local) active 1913-1914 | Brissenden (1919) , 363 ; Solidarity, 09/20/1913 |
| Montana | Kalispell | Local No. 300 - (unknown) Secretary: M.F. McClung active 1909 | Industrial Worker, 09/09/1909 |
| Montana | Kalispell | Local No. 411 - (unknown) active 1908 | Industrial Union Bulletin, 01/18/1908 |
| Montana | Kalispell | Local No. 421 - Brewery Workers (Brewery) Secretary: Joe Duddy active 1908-1911 | Industrial Worker, p. 1 May 6, 1909 - Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 02/08/1908 ; Industrial Worker, 01/05/1911 |
| Montana | Kalispell | unknown - (Lumber) active 1909-1910 | Brissenden (1919) , 366 |
| Montana | Lewistown | Local No. 65 - (unknown) active 1907 | Industrial Union Bulletin, 11/16/1907 |
| Montana | Missoula | Local No. 140 - (unknown) active 1913 | Solidarity, 05/31/1913 |
| Montana | Missoula | Local No. 40 - (Lumber) Voted to join AWO, Secretary: Pete Brown active 1910-1916 | Brissenden (1919) , 363 ; Solidarity, p.4,04.01.1916 ; - Industrial Worker, 03/12/1910 ; Industrial Worker, 01/05/1911; Industrial Worker, 01/11/1912 |
| Montana | Missoula | unknown - (Lumber) active 1909-1910 | Brissenden (1919) , 366 |
| Montana | Red Lodge | Local No. 181 - Domestic Service Workers Industral Unon (Domestic) active 1910-1911 | Industrial Worker, 01/05/1911 ; Solidarity, 07/09/1910 |
| Montana | Roundup | unknown - (Construction) active 1909-1910 | Brissenden (1919) , 366 |
| Montana | St. Regis | Local No. 35 - (unknown) Secretary: H.C. McCann active 1909 | Industrial Worker, 09/09/1909 |
| Nebraska | Omaha | Local No. 36 - (unknown) Secretary: F.H. Alexander active 1909-1910 | Industrial Worker, 09/09/1909;Industrial Worker, 03/12/1910 |
| Nebraska | Omaha | Local No. 384 - (unknown) active 1913 | Solidarity, 01/25/1913 |
| Nebraska | Omaha | Local No. 595 - Omaha Industrial Union (unknown) Secretary: J.J. Rogers active 1915-1917 | Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| Nebraska | Omaha | Local No. 86 - (unknown) active 1907-1908 | Industrial Union Bulletin, 01/18/1908 ; Industrial Union Bulletin, 08/31/1907 |
| Nebraska | Omaha | Propaganda League - (mixed local) active 1914 | Brissenden (1919) , 363 |
| Nevada | Beatty | Loca No. 262 - (unknown) active 1907-1908 | Industrial Union Bulletin, 07/13/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Nevada | Goldfield | - Railway Workers' Industrial Union (Railway) active 1907 | Industrial Union Bulletin, 11/16/1907 |
| Nevada | Goldfield | Local No. 353 - (mixed local) Secretary: Chas. C. Chambers active 1914-1917 | Brissenden (1919) , 363 ; Branch Secretaries, Military Intelligence Files |
| Nevada | National | Local No. 72 - (unknown) active 1910-1911 | Industrial Worker, 01/05/1911; Solidarity, 12/17/1910 |
| Nevada | National | unknown - (mixed local) active 1909-1910 | Brissenden (1919) , 366 |
| Nevada | Reno | Local No. 306 - (unknown) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Nevada | Reno | Local No. 588 - (mixed local) active 1914 | Brissenden (1919) , 363 |
| Nevada | Rhyolite | Local No. 258 - (unknown) active 1907-1908 | Industrial Union Bulletin, 08/24/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Nevada | Spring Valley | Local No. 353 - (unknown) active 1907 | Industrial Union Bulletin, 10/19/1907 |
| Nevada | Tonopah | Local No. 111 - (unknown) Secretary: T.R. Wilson active 1917 | Branch Secretaries, Military Intelligence Files |
| Nevada | Tonopah | Local No. 325 - (unknown) active 1907 | Industrial Union Bulletin, 03/02/1907 |
| Nevada | Tonopah | Propaganda League - (mixed local) active 1914 | Brissenden (1919) , 363 |
| Nevada | Unionville | Local No. 100 - (unknown) Chartered 05/1907 active 1907 | Industrial Union Bulletin, 09/07/1907 |
| New Hampshire | Nashua | Local No. 359 - Textile Industrial Workers' Union (Textile) active 1916 | 1916 Convention Proceedings |
| New Jersey | Athenia | Local No. 266 - Shop Workers' Industrial Union (Retail) active 1916 | 1916 Convention Proceedings |
| New Jersey | Bayonne | Local No. 42 - (unknown) active 1907 | Industrial Union Bulletin, 09/07/1907 |
| New Jersey | Elizabeth | Local No. 29 - (Machinists) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New Jersey | Elizabeth | Local No. 74 - (Machinists) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New Jersey | Harrison | Local No. 24 - (unknown) Secretary: A. Hagaberg active 1909-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 |
| New Jersey | Hoboken | Local No. 120 - (unknown) active 1908 | Industrial Union Bulletin, 02/08/1908 |
| New Jersey | Hoboken | Local No. 504 - (Transportation) active 1914 | Brissenden (1919) , 363 |
| New Jersey | Hudson County | Local No. 120 - (unknown) active 1907 | Industrial Union Bulletin, 09/07/1907 |
| New Jersey | Jamestown | Local No. 365 - Mixed Industries (mixed local) active 1906-1907 | Brissenden (1919) , 135 |
| New Jersey | Jersey City | Local No. 502 - Macaroni Workers' Industrial Union (Macaroni) active 1916 | 1916 Convention Proceedings |
| New Jersey | Jersey City | Local No. 510 - (unknown) Secretary: H. Hartman active 1907-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 05/18/1907 |
| New Jersey | Jersey City | Local No. 67 - (mixed local) active 1907-1908 | Industrial Union Bulletin, 05/04/1907 ; Industrial Union Bulletin, 05/23/1908 |
| New Jersey | Jersey City | unknown - Industrial Workers Union (mixed local) active 1906-1907 | Brissenden (1919) , 134 |
| New Jersey | Kearny | Local No. 24 - (unknown) active 1907 | Industrial Union Bulletin, 12/21/1907 |
| New Jersey | New Brunswick | Local No. 476 - Textile Workers' Industrial Union (Textile) Secretary: Andrew Newman active 1915-1917 | Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| New Jersey | Newark | Local No. - (Excavators) Chartered 06/1907 active 1907 | Industrial Union Bulletin, 09/07/1907 |
| New Jersey | Newark | Local No. 123 - (mixed local) active 1914 | Brissenden (1919) , 363 |
| New Jersey | Newark | Local No. 153 - (unknown) Secretary: John Polleshia active 1917 | Branch Secretaries, Military Intelligence Files |
| New Jersey | Newark | Local No. 24 - (Machinists) active 1907 | Industrial Union Bulletin, 10/19/1907 |
| New Jersey | Newark | Local No. 300 - Metal and Machinery Workers' Industrial Union (Metal and machinery) active 1919 | New Solidarity, 11/22/1919 |
| New Jersey | Newark | Local No. 90 - (mixed local) Secretary: Jacob Israeal active 1914-1917 | Brissenden (1919) , 363 ; Solidarity, p.2,04.11.1914 ; Branch Secretaries, Military Intelligence Files |
| New Jersey | Paterson | Local No. 1000 - Textile Workers' Industrial Union (Textile) active 1919 | New Solidarity, 08/30/1919 |
| New Jersey | Paterson | Local No. 152 - Silk Workers (Textile) Membership grew from 900 members prior to the Paterson Strike (1913) to 10,000 during the conflict. SecretaryL Charles Krattiger active 1907-1917 | Brissenden (1919) , 363 ; Melvyn Dubofsky, We Shall Be All: A History of the IWW, 271-2 ; Solidarity, p.4,05.29.1915 ; Branch Secretaries, Military Intelligence Files ; Industrial Union Bulletin, 03/16/1907; Industrial Union Bulletin, 02/01/1908 |
| New Jersey | Paterson | Local No. 152 Branch 1 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New Jersey | Paterson | Local No. 152 branch 2 - (unknown) active 1907 | Industrial Union Bulletin, 09/07/1907 |
| New Jersey | Paterson | Local No. 152 Branch 4 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New Jersey | Paterson | Local No. 152 Branch 5 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New Jersey | Paterson | Local No. 156 - (Woodworkers) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| New Jersey | Paterson | Local No. 214 - (Broad silk weavers) active 1907 | Industrial Union Bulletin, 03/02/1907 |
| New Jersey | Paterson | Local No. 22 - (Locomotive builders) active 1907 | Industrial Union Bulletin, 06/15/1907 |
| New Jersey | Paterson | Local No. 25 - (Textile) active 1914 | Brissenden (1919) , 363 |
| New Jersey | Paterson | Local No. 4 - Flax Dressers' Union (Flax dressers) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New Jersey | Paterson | Local No. 42 - (Musicians) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New Jersey | Paterson | Local No. 63 - (Machinists) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New Jersey | Paterson | Local No. 63 - (Machinists) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New Jersey | Paterson | unknown - Industrial Workers Union (mixed local) active 1906-1907 | Brissenden (1919) , 134 |
| New Jersey | Summit | Local No. 212 - Silk Workers' Industrial Union (Textile) active 1914-1917 | Brissenden (1919) , 363 ; Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| New Jersey | West Hoboken | Local No. 120 - (Textile) Secretary: D. Ficari active 1909-1911 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Worker, 01/05/1911 |
| New Jersey | West Hoboken | Local No. 514 - (Textile) Secretary: A. Clerici active 1914-1917 | Brissenden (1919) , 363 ; Branch Secretaries, Military Intelligence Files |
| New York | Brooklyn | - Propaganda League (Propaganda) active 1914 | 1916 Convention Proceedings |
| New York | Brooklyn | Local No. 177 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New York | Brooklyn | Local No. 179 - (unknown) Secretary: J.A. Houlston active 1909-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 |
| New York | Brooklyn | Local No. 179 Branch 1 - (mixed local) Secretary: D. Goldstein active 1914-1917 | Brissenden (1919) , 364 ; Branch Secretaries, Military Intelligence Files |
| New York | Brooklyn | Local No. 192 - (Cigar makers) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| New York | Brooklyn | Local No. 193 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New York | Brooklyn | Local No. 206 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New York | Brooklyn | Local No. 213 - (Machinists) active 1914 | Brissenden (1919) , 364 |
| New York | Brooklyn | Local No. 25 - (Machinists) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New York | Brooklyn | Local No. 300 - Metal and Machinery Workers' Industrial Union (Metal and machinery) active 1919 | New Solidarity, 11/22/1919 |
| New York | Brooklyn | Local No. 46 - Brooklyn Branch Bakery Workers' Industrial Union (Baking) active 1916 | 1916 Convention Proceedings |
| New York | Brooklyn | Local No. 466 - (mixed local) active 1914-1917 | Brissenden (1919) , 364 ; Branch Secretaries, Military Intelligence Files |
| New York | Brooklyn | Local No. 495 - Sugar Workers' Industrial Union (Food) active 1915 | 1916 Convention Proceedings |
| New York | Brooklyn | Local No. 599 - (Recruiting) Established in 04/1916 active 1916 | Solidarity, p.4,07.22.1916 ; 1916 Convention Proceedings, p.?? |
| New York | Brooklyn | Local No. 701 - (Printing) active 1914 | Brissenden (1919) , 364 |
| New York | Buffalo | - Buffalo Propaganda League (Propaganda) Secretary: H. Tuthill active 1910 | Industrial Worker, 03/12/1910 |
| New York | Buffalo | I.U. 200 - Marine Transport Workres' Industrial Union No. 200 (Marine Transport) active 1917 | Solidarity, p.4,05.26.1917 ; |
| New York | Buffalo | Local No. 317 - (unknown) Polish; Secretary: J. Fronkowlak active 1907-1911 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 08/24/1907 ; Industrial Union Bulletin, 04/18/1908 ; Industrial Worker, 01/05/1911 |
| New York | Buffalo | Local No. 43 - (Machinists) active 1907-1908 | Industrial Union Bulletin, 05/25/1907; Industrial Union Bulletin, 02/08/1908 |
| New York | Buffalo | Local No. 5 - (mixed local) Secretary: Joseph Klepus active 1914-1917 | Brissenden (1919) , 363 ; Solidarity, p.2, Solidarity, p.1,05.29.1915, 06.26.1920 ; Branch Secretaries, Military Intelligence Files |
| New York | College Point | Local No. 301 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New York | Dunkirk | Local No. 17 - Metal & Machinery Workers' Industrial Union (Metal and Machinery) active 1910-1911 | Solidarity, 11/12/1910 ; Industrial Worker, 01/05/1911 |
| New York | Dunkirk | unknown - (Metal workers) active 1909-1910 | Brissenden (1919) , 366 |
| New York | Harlem | Local No. 300 - Metal and Machinery Workers' Industrial Union (Metal and machinery) active 1919 | New Solidarity, 11/22/1919 |
| New York | Jamestown | Local No. 114 - (mixed local) active 1914 | Brissenden (1919) , 363 |
| New York | Jamestown | Local No. 353 - (unknown) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| New York | Jamestown | Local No. 365 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New York | Jamestown | Local No. 553 - (Furniture workers) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| New York | Jersey City | Local No. 163 - (unknown) Secretary: W.N. Waggoner active 1907-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 10/19/1907 |
| New York | Little Falls | Local No. 207 - (Textile) Secretary: Paul Slevis active 1914-1917 | Brissenden (1919) , 363 ; Branch Secretaries, Military Intelligence Files |
| New York | Long Island City | Local No. 301 - (Macaroni) Secretary: Guiseppe Fallettini active 1915-1917 | Solidarity, p.4,10.28.1916 ; Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| New York | New York | - (Bakery and confectionary workers) Chartered 06/1907 active 1907 | Industrial Union Bulletin, 09/07/1907 |
| New York | New York | active 1916 | 1916 Convention Proceedings |
| New York | New York | - New York Propaganda League (mixed local) active 1908 | Industrial Union Bulletin, 06/27/1908 |
| New York | New York | I.U. 49 - (unknown) active 1917 | Solidarity, p.8,08.08.1916 ; |
| New York | New York | Local No, 180 - Domestic Service Workers' Industrial Union (Domestic) active 1910 | Solidarity, 07/09/1910 |
| New York | New York | Local No. ? - (Watch and Clock Workers) active 1913 | Solidarity, 02/01/1913 |
| New York | New York | Local No. 1 - (Marine transport) Secretary: John L. Cantela active 1914-1917 | Brissenden (1919) , 364 ; Branch Secretaries, Military Intelligence Files |
| New York | New York | Local No. 1000 - Textile Workers' Industrial Union (Textile) active 1919 | New Solidarity, 11/22/1919 |
| New York | New York | Local No. 105 - (Tobacco) active 1913 | Solidarity, 01/04/1913 |
| New York | New York | Local No. 112 - Hotel & Restaurant Workers' Industrial Union (Hospitality) active 1915 | 1916 Convention Proceedings |
| New York | New York | Local No. 1200 - Printing and Publishing Workers' Industrial Union (Printing and publishing) active 1919 | New Solidarity, 04/19/1919 |
| New York | New York | Local No. 129 - (unknown) active 1913 | Solidarity, 01/04/1913 |
| New York | New York | Local No. 130 - (unknown) Secretary: N. Beekman active 1907-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 08/24/1907 |
| New York | New York | Local No. 134 - (unknown) active 1913 | Solidarity, 01/04/1913 |
| New York | New York | Local No. 15 - (unknown) Secretary: A. Black active 1909-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 12/21/1907 |
| New York | New York | Local No. 161 - (Typography) Secretary: C. Delz active 1907-1909 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 07/04/1908 ; Industrial Union Bulletin, 08/31/1907 |
| New York | New York | Local No. 161 Hungarian Branch 3 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New York | New York | Local No. 166 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New York | New York | Local No. 168 - (Shoes) 1000 members as of 11/1910 active 1910 | Solidarity, 11/5/1910 |
| New York | New York | Local No. 177 - Capmakers (Clothing) active 1906-1907 | Brissenden (1919) , 135 |
| New York | New York | Local No. 179 - (mixed local) active 1911-1915 | Brissenden (1919) , 364 ; Solidarity, p.2, Solidarity, p.4,03.06.1915, 04.03.1915, 06.19.1915 ; Solidarity, 01/04/1913 ; Industrial Worker, 01/05/1911; Industrial Worker, 01/04/1912 |
| New York | New York | Local No. 179 Branch 3 - (mixed local) Secretary: L. Fischbein active 1914-1917 | Brissenden (1919) , 364 ; Branch Secretaries, Military Intelligence Files |
| New York | New York | Local No. 189 - Clothing Workers' Industrial Union (Clothing) active 1910-1913 | Solidarity, 11/12/1910 ; Solidarity, 01/04/1913 ; Industrial Worker, 01/05/1911 |
| New York | New York | Local No. 194 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New York | New York | Local No. 198 - Shirt Workers' Industrial Union (Clothing) active 1915 | 1916 Convention Proceedings |
| New York | New York | Local No. 230 - (unknown) active 1913 | Solidarity, 01/04/1913 |
| New York | New York | Local No. 261 - (unknown) active 1907 | Industrial Union Bulletin, 07/27/1907 |
| New York | New York | Local No. 357 - (unknown) active 1913 | Solidarity, 01/04/1913 |
| New York | New York | Local No. 389 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New York | New York | Local No. 420 - (unknown) Secretary: C.G. Fisher active 1909-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 |
| New York | New York | Local No. 46 - (Baking) Secretary: Luigi Rota active 1909 - 1917 | Brissenden (1919) , 364 ; Branch Secretaries, Military Intelligence Files ; New Solidarity, 11/22/1919 ; Industrial Union Bulletin, 11/16/1907 |
| New York | New York | Local No. 462 - (Button Making) Formerly AFL active 1916 | Solidarity, p.1,11.25.1916 ; |
| New York | New York | Local No. 487 - Electrical Workers' Industrial Union (Electrical) active 1916 | 1916 Convention Proceedings |
| New York | New York | Local No. 522 - (Musicians) active 1908 | Industrial Union Bulletin, 08/22/1908 |
| New York | New York | Local No. 522 Branch 1 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New York | New York | Local No. 522 branch 1 - (unknown) active 1907 | Industrial Union Bulletin, 09/07/1907 |
| New York | New York | Local No. 522 Branch 3 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New York | New York | Local No. 527 - (Textile) Secretary: Mary E. Takajian active 1914-1917 | Brissenden (1919) , 364 ; Branch Secretaries, Military Intelligence Files |
| New York | New York | Local No. 536 - Hungarian Recruiting Local (mixed local) active 1907 | Industrial Union Bulletin, 03/23/1907 |
| New York | New York | Local No. 546 - (unknown) active 1913 | Solidarity, 01/04/1913 |
| New York | New York | Local No. 547 - Italian Barbers' Local (Barbers) Started in 1907 active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New York | New York | Local No. 556 - (unknown) active 1913 | Solidarity, 01/04/1913 |
| New York | New York | Local No. 558 - (Piano Workers) Over 100 members in 1914 active 1913 | Solidarity, 01/04/1913 |
| New York | New York | Local No. 561 - Piano Workers' Industrial Union (Piano) active 1916 | 1916 Convention Proceedings |
| New York | New York | Local No. 58 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New York | New York | Local No. 59 - (Clothing) active 1907 | Industrial Union Bulletin, 03/16/1907 |
| New York | New York | Local No. 59 branch 3 - (Clothing) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New York | New York | Local No. 59 branch 3 - (Clothing) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| New York | New York | Local No. 9 - (mixed local) Secretary: Joseph Novak active 1913-1917 | Brissenden (1919) , 364 ; Branch Secretaries, Military Intelligence Files |
| New York | New York | Local No. 9 - Bohemian Metal Workers' Union (Metal) active 1913 | Solidarity, 03/08/1913 |
| New York | New York | Local No. 91 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New York | New York | Local No. 95 - (Building Workers) Secretary: W. Northrop active 1907-1913 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Solidarity 02/12/1910 ; Solidarity, 01/04/1913 ; Industrial Union Bulletin, 10/26/1907 ; Industrial Union Bulletin, 08/22/1908 |
| New York | New York | Local No. 95 Branch 10 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New York | New York | Local No. 95 Branch 4 - Building Trades Industrial Union (Building Trades) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New York | New York | Local No. 95 Iron Workers' Branch - Building Trades Industrial Union (Iron Workers) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New York | New York | unknown - (Clothing) active 1909-1910 | Brissenden (1919) , 366 |
| New York | New York | unknown - (Construction) active 1909-1910 | Brissenden (1919) , 366 |
| New York | New York | unknown - (Public service) active 1909-1910 | Brissenden (1919) , 366 |
| New York | New York | unknown - Electrical Workers' Industrial Union (Electrical) active 1916 | Solidarity, p.4,05.27.1916 ; |
| New York | New York | unknown - Italian Federation of Bakers (Baking) active 1916 | Solidarity, p.3,06.03.1916 ; |
| New York | New York | Local No. 556, branch 2 - (unknown) Secretary: Jaroslav Muller active 1917 | Branch Secretaries, Military Intelligence Files |
| New York | New York | Local No. 573 - Construction Workers' Industrial Union (Construction) active 1919 | New Solidarity, 11/22/1919 |
| New York | Olean | Local No. 61 - (unknown) active 1910-1911 | Industrial Worker, 01/05/1911; Solidarity, 10/15/1910 |
| New York | Rochester | Local No. 191 - (Textile) John L. Cantela active 1914-1917 | Brissenden (1919) , 363 ; Branch Secretaries, Military Intelligence Files |
| New York | Rochester | Local No. 51 - (Machinists) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| New York | Rochester | Local No. 76 - (mixed local) Secretary: M. Feingold active 1914-1917 | Brissenden (1919) , 363 ; Branch Secretaries, Military Intelligence Files |
| New York | Schenectady | I.U. 300 - Metal & Machinery Workers' Industrial Union (Metal workers) active 1916 | 1916 Convention Proceedings |
| New York | Schenectady | Local No. 1 - (Machinists) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| New York | Schenectady | Local No. 31 - (unknown) active 1907 | Industrial Union Bulletin, 03/02/1907 |
| New York | Skohegan | Local No. 379 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| New York | Utica | Local No. 113 - (mixed local) active 1914 | Brissenden (1919) , 363 |
| New York | Yonkers | Local No. 91 - (unknown) Secretary: J. Lyng active 1907-1909 | Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 09/07/1907 ; Industrial Union Bulletin, 02/08/1908 |
| New York | New York | Local No. 206 - (unknown) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| North Dakota | Devils Lake | Local No. 152 - Building Workers' Industrial Union (Building Workers) Chartered 10/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| North Dakota | Minot | Local No. 585 - (mixed local) active 1914 | Brissenden (1919) , 364 ; 1916 Convention Proceedings, p.?? |
| Nova Scotia | Amherst | Local No. 122 - (mixed local) active 1914 | Brissenden (1919) , 360 |
| Ohio | Akron | Local No. 470 - Rubber Workers' Industrial Union (Rubber) active 1913-1919 | New Solidarity, 03/08/1919 |
| Ohio | Canton | Local No. 259 - (unknown) active 1907 | Industrial Union Bulletin, 09/14/1907 |
| Ohio | Cincinnati | Local No. 107 - (mixed local) active 1914 | Brissenden (1919) , 364 |
| Ohio | Cincinnati | Local No. 17 - (Machinists) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Ohio | Cincinnati | Local No. 213 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Ohio | Cincinnati | Local No. 221 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Ohio | Cincinnati | Local No. 33 - (Machinists) active 1908 | Industrial Union Bulletin, 02/08/1908 |
| Ohio | Cincinnati | Local No. 579 - (unknown) active 1913 | Solidarity, 12/27/1913 |
| Ohio | Cincinnati | Local No. 6 - (unknown) active 1907-1908 | Industrial Union Bulletin, 08/24/1907 ; Industrial Union Bulletin, 05/23/1908 |
| Ohio | Cincinnati | Local No. 73 - (Safe workers) active 1907 | Industrial Union Bulletin, 03/16/1907 |
| Ohio | Cincinnati | unknown - Marble Workers (Construction) active 1906-1907 | Brissenden (1919) , 135 |
| Ohio | Cleveland | - Cleveland Propaganda League (Propaganda) Secretary: Rose Williams, Frank Lochus active 1915-1917 | Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| Ohio | Cleveland | - Lithuanian Propaganda League (Propaganda) active 1916 | 1916 Convention Proceedings |
| Ohio | Cleveland | I.U. 197 - Garment Workers' Industrial Union No. 197 (Garment) active 1917 | Solidarity, p.6,07.21.1917 ; |
| Ohio | Cleveland | Local No. 139 - Hodcarriers (Construction) active 1906-1907 | Brissenden (1919) , 135 |
| Ohio | Cleveland | Local No. 139 branch 1 - (unknown) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Ohio | Cleveland | Local No. 139 Hungarian Branch - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Ohio | Cleveland | Local No. 145 - (Packing House Workers) active 1913 | Solidarity, 05/03/1913 |
| Ohio | Cleveland | Local No. 17 - (unknown) Hungarian active 1916 | Solidarity, p.1,08.12.1916 ; |
| Ohio | Cleveland | Local No. 23 - (unknown) active 1907 | Industrial Union Bulletin, 09/14/1907 |
| Ohio | Cleveland | Local No. 31 - (Metal and Machinery) active 1907 | Industrial Union Bulletin, 07/27/1907 |
| Ohio | Cleveland | Local No. 33 - (Machinists) Secretary: Chas. H. Smith (1909), E.J. Miller (1917) active 1907-1917 | Brissenden (1919) , 364 ; Solidarity, p.2, Solidarity, p.4,05.09.1914, 10.30.1915 ; - Industrial Worker, 09/09/1909 ; Branch Secretaries, Military Intelligence Files ; Industrial Union Bulletin, 08/24/1907 ; Solidarity, 05/03/1913 ; Industrial Worker, 01/05/1911 |
| Ohio | Cleveland | Local No. 33 branch 2 - Metal and Machinery Workers' Industrial Union (Metal and machinery) Chartered 09/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| Ohio | Cleveland | Local No. 33 Branch 3 - (mixed local) active 1914 | Brissenden (1919) , 364 |
| Ohio | Cleveland | Local No. 450 - (Furniture) active 1914 | Brissenden (1919) , 364 |
| Ohio | Cleveland | Local No. 575 - Building Workers' Industrial Union (Construction) Hungarian active 1916 | Solidarity, p.1,06.24.1916 ; 1916 Convention Proceedings, p.?? |
| Ohio | Cleveland | Local No. 606 - (Recruiting) Hungarian active 1916 | Solidarity, p.1,08.12.1916 ; 1916 Convention Proceedings, p.?? |
| Ohio | Cleveland | Local No. 613 - Shoe Repair Workers' Industrial Union (Shoes) active 1916 | 1916 Convention Proceedings |
| Ohio | Cleveland | Local No. 80 - (Musicians) active 1907 | Industrial Union Bulletin, 09/07/1907 |
| Ohio | Cleveland | Local No. 89 - (Tobacco) Secretary: B. Persky active 1907-1910 | Industrial Worker, 03/12/1910 ; Industrial Union Bulletin, 08/24/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Ohio | Cleveland | Local No. 98 - (unknown) Secretary: M. Marceau active 1909 | Industrial Worker, 09/09/1909 |
| Ohio | Columbus | Local No. 170 - (unknown) active 1907 | Industrial Union Bulletin, 10/19/1907 |
| Ohio | Columbus | Local No. 257 - (mixed local) active 1907 | Industrial Union Bulletin, 05/04/1907 |
| Ohio | Columbus | Local No. 54 - (unknown) active 1913 | Solidarity, 01/04/1913 |
| Ohio | Dayton | Local No. 573 - (unknown) active 1913 | Solidarity, 07/05/1913 |
| Ohio | Dillonvale | Local No. 236 - (unknown) Secretary: Joseph Kobylak active 1917 | Branch Secretaries, Military Intelligence Files |
| Ohio | Dillonvale | Local No. 240 - (mixed local) active 1914 | Brissenden (1919) , 364 |
| Ohio | Dillonvale | Local No. 340 - (unknown) Secretary: James Delocal active 1917 | Branch Secretaries, Military Intelligence Files |
| Ohio | Fostoria | Local No. 309 - Wire Workers' Industrial Union (Wire) active 1910 | Solidarity, 08/13/1910 |
| Ohio | Fostoria | unknown - (Metal workers) active 1909-1910 | Brissenden (1919) , 366 |
| Ohio | Fremont | Local No. 10 - (Electrical) active 1912 | Vincent St. John (1917) |
| Ohio | Glencoe | Local No. ? - (unknown) Chartered 06/1907 - fee paid by JB Sabalach active 1907 | Industrial Union Bulletin, 09/07/1907 |
| Ohio | Lorain | Local No. 75 - (unknown) Secretary: G.A. Storck active 1910 | Industrial Worker, 03/12/1910 |
| Ohio | Lorain | Local No. 76 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Ohio | Lorain | unknown - (mixed local) active 1909-1910 | Brissenden (1919) , 366 |
| Ohio | Lyra | Local No. 540 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Ohio | Martins Ferry | Local No. 294 - (unknown) Secretary: Evan Enoch active 1910 | Industrial Worker, 03/12/1910 |
| Ohio | Massillion | unknown - (Tin plate) active 1909-1910 | Brissenden (1919) , 366 |
| Ohio | Massillon | Local No. 295 - (unknown) Secretary: Clyde Sweeney active 1910 | Industrial Worker, 03/12/1910 |
| Ohio | Niles | Local No. 302 - Iron and Steel Mill Workers' Industrial Union (Iron and steel mill) Chartered 11/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| Ohio | Portsmouth | Local No. 321 - (unknown) active 1907 | Industrial Union Bulletin, 10/19/1907 |
| Ohio | Rayland | Local No. 236 - (mixed local) active 1914 | Brissenden (1919) , 364 |
| Ohio | Rossford | - Glass Workers' Industrial Union (Glass workers) active 1919 | New Solidarity, 05/17/1919 |
| Ohio | Toledo | Local No. 300 - Metal and Machinery Workers' Industrial Union (Metal and Machinery Workers' Industrial Union) active 1919 | New Solidarity, 01/18/1919 |
| Ohio | Toledo | Local No. 86 - (mixed local) Secretary: Josephine Bates (1915), Leon E. Shuff (1917) active 1914-1917 | Brissenden (1919) , 364 ; Solidarity, p.4,10.09.1915 ; Branch Secretaries, Military Intelligence Files |
| Ohio | Warren | Local No. 539 - Lamp Workers' Industrial Union (Lamp workers) Chartered 11/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| Ohio | Youngstown | - Youngstown Propaganda League (Propaganda) Secretary: Pat Rossi active 1917 | Branch Secretaries, Military Intelligence Files |
| Ohio | Youngstown | Local No. 196 - (unknown) active 1907-1908 | Industrial Union Bulletin, 08/24/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Oklahoma | Cushing | Local No. 454 - Oil Workers' Industrial Union (Oil) Secretary: James S. Keen active 1915-1917 | Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| Oklahoma | Drumright | I.U. 450 - Oil Workers' Industrial Union No. 450 (Oil) active 1917 | Solidarity, p.1,03.31.1917 ; |
| Oklahoma | Oklahoma City | Local No. 226 - (Baking) active 1907 | Industrial Union Bulletin, 10/19/1907 |
| Oklahoma | Oklahoma City | Local No. 239 - (unknown) active 1907-1908 | Industrial Union Bulletin, 08/24/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Ontario | Fort Williams | I.U. 6 - Marine Transport Workers' Industrial Union (Marine Transport) active 1914 | 1916 Convention Proceedings |
| Ontario | Hamilton | Local No. 251 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Ontario | Hamilton | Local No. 554 - (unknown) active 1907 | Industrial Union Bulletin, 04/27/1907 |
| Ontario | Hamilton | Local No. 72 - (Machinists) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Ontario | Toronto | Local No. 198 - (unknown) active 1907-1908 | Industrial Union Bulletin, 10/26/1907 ; Industrial Union Bulletin, 10/10/1908 |
| Ontario | Toronto | Local No. 53 - (Machinists) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Ontario | West Lake | Local No. 514 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Oregon | Astoria | Local No. 543 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 ; Industrial Union Bulletin, 08/31/1907 |
| Oregon | Bend | I.U. 500 - Lumber Workers' Industrial Union No. 500 (Lumber) active 1917 | Solidarity, p.8,07.21.1917 ; |
| Oregon | Crescent City | Local No. 117 - (unknown) active 1907 | Industrial Union Bulletin, 07/20/1907 |
| Oregon | Eugene | Local No. 88 - (unknown) active 1913 | Solidarity, 10/04/1913 |
| Oregon | Marshfield | Local No. 435 - Lumber Workers' Industrial Union (Lumber) Chartered 11/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| Oregon | Newberg | Local No. 330 - (unknown) active 1907 | Industrial Union Bulletin, 06/15/1907 |
| Oregon | Portland | Local No. 141 - (Construction) Secretary: W.T. Nef active 1909-1913 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Worker, 01/05/1911; Solidarity, 06/28/1913 |
| Oregon | Portland | Local No. 319 - (Lumber) active 1907 | Melvyn Dubofsky, We Shall Be All: A History of the IWW, 129 ; Industrial Union Bulletin, 08/31/1907 |
| Oregon | Portland | Local No. 92 - (unknown) Secretary: B.E. Nilsson active 1909-1915 | Solidarity, p.1,04.24.1915 ; Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 |
| Oregon | Portland | Local No. 93 - (Lumber) Secretary: Paul Frowerk active 1907-1914 | Brissenden (1919) , 364 ; Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Worker, 01/05/1911; Solidarity, 06/28/1913 ; Industrial Union Bulletin, 08/31/1907 ; Industrial Union Bulletin, 02/08/1908 ; Solidarity, 06/28/1913 ; Industrial Worker, 01/05/1911 |
| Oregon | Portland | unknown - (Railroad) active 1909-1910 | Brissenden (1919) , 366 |
| Panama | Cristobal | Local No. 505 - (Transportation) active 1914 | Brissenden (1919) , 364 |
| Pennsylvania | Allegheny | Local No. 293 - (unknown) Secretary: Th. Bessemie active 1910 | Industrial Worker, 03/12/1910 |
| Pennsylvania | Allegheny | Local No. 293, Croatian branch - (unknown) Secretary: Th. Bessemie active 1910 | Industrial Worker, 03/12/1910 |
| Pennsylvania | Allentown | Local No. 57 - (unknown) active 1908 | Industrial Union Bulletin, 02/01/1908 |
| Pennsylvania | Austin Heights | Local No. 504 - Coal Mine Workers' Industrial Union (Mining-coal) active 1915-1916 | Solidarity, p.1,02.19.1916 ; 1916 Convention Proceedings, p.?? |
| Pennsylvania | Avoca | Local No. 508 - (Mining-coal) Secretary: Peter Hadush active 1916-1917 | Solidarity, p.1,02.19.1916 ; Branch Secretaries, Military Intelligence Files |
| Pennsylvania | Braddock | Local No. 150 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Pennsylvania | Dunmore | Local No. 5 - (unknown) Secretary: L. D'Andrea active 1909-1910 | Industrial Worker, 03/12/1910 -Industrial Worker, 09/09/1909 |
| Pennsylvania | Dupont | Local No. 507 - Coal Mine Workers' Industrial Union (Mining-coal) active 1915-1916 | Solidarity, p.1,02.19.1916 ; 1916 Convention Proceedings, p.?? |
| Pennsylvania | Duryea | Local No. 506 - (Mining-coal) Secretary: John Malinoski active 1915-1917 | Solidarity, p.1,02.19.1916 ; Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| Pennsylvania | E. Pittsburgh | Local No. 350 - (unknown) Secretary: B.F. Haldeman active 1917 | Branch Secretaries, Military Intelligence Files |
| Pennsylvania | Erie | Local No. 210 - (Machinists) active 1914 | Brissenden (1919) , 364 |
| Pennsylvania | Erie | Local No. 300 - Metal and Machinery Workers' Industrial Union (Metal and machinery) active 1919 | New Solidarity, 03/08/1919 |
| Pennsylvania | Fairchance | Local No. 25, branch 2 - (unknown) Secretary: G. Basso active 1909 | Industrial Worker, 09/09/1909 |
| Pennsylvania | Greenwood | Local No. 510 - (Mining-coal) active 1916 | Solidarity, p.1,02.19.1916 ; |
| Pennsylvania | Homeacre-Lyndora | unknown - (RR car builders) active 1909-1910 | Brissenden (1919) , 366 |
| Pennsylvania | Homestead | Local No. 205 - (Machinists) active 1914 | Brissenden (1919) , 364 |
| Pennsylvania | Jessup | Local No. 501 - Coal Mine Workers' Industrial Union (Mining-coal) active 1916 | 1916 Convention Proceedings |
| Pennsylvania | Lancaster | Local No. 57 - (unknown) active 1907 | Industrial Union Bulletin, 11/16/1907 |
| Pennsylvania | Luzerne | Local No. 583 - Coal Mine Workers' Industrial Union (Mining-coal) active 1916 | 1916 Convention Proceedings |
| Pennsylvania | Lyndora | Local No. 299 - (unknown) Secretary: Jerry Kaufold active 1909-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 |
| Pennsylvania | Masontown | Local No. 25, branch 1 - (unknown) Secretary: John Lodone active 1909 | Industrial Worker, 09/09/1909 |
| Pennsylvania | McDonald | Local No. 392 - (unknown) Secretary: Paulon Bastide active 1910 | Industrial Worker, 03/12/1910 |
| Pennsylvania | McKees Rocks | Local No. 229 - Car Builders Industrial Union (RR car builders) reported 5000 members in September of 1909 active 1909 | Melvyn Dubofsky, We Shall Be All: A History of the IWW, 208 |
| Pennsylvania | McKees Rocks | Local No. 294 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Pennsylvania | McKees Rocks | Local No. 296 - (Steel workers) Secretary: Val. Spunar active 1910 | Industrial Worker, 03/12/1910 ; Solidarity 01/29/1910 |
| Pennsylvania | McKees Rocks | unknown - (Steel workers) active 1909-1910 | Brissenden (1919) , 366 |
| Pennsylvania | Minooka | Local No. 510 - Coal Mine Workers' Industrial Union (Mining-coal) active 1915 | 1916 Convention Proceedings |
| Pennsylvania | Monaca | Local No. 101 - Steel Workers' Union (Steel workers) active 1907 | Industrial Union Bulletin, 09/07/1907 |
| Pennsylvania | Monaca | Local No. 106 - (unknown) active 1907 | Industrial Union Bulletin, 10/19/1907 |
| Pennsylvania | Monaca | Local No. 607 - (Recruiting) active 1916 | 1916 Convention Proceedings |
| Pennsylvania | Monogahela City | Local No. 393 - (unknown) Secretary: James Alassia active 1910 | Industrial Worker, 03/12/1910 |
| Pennsylvania | New Castle | Local No. 297 - (unknown) Secretary: H.C. Fletcher (1910), Geo. W. Dawson (1917) active 1910-1917 | Solidarity, p.1,03.27.1915 ; Industrial Worker, 03/12/1910 ; Branch Secretaries, Military Intelligence Files |
| Pennsylvania | New Castle | Local No. 298 - (unknown) Secretary: Charles McKeever active 1909-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 |
| Pennsylvania | New Castle | unknown - (Tin plate) active 1909-1910 | Brissenden (1919) , 366 |
| Pennsylvania | Newcastle | Local No. 297 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Pennsylvania | Old Forge | Local No. 511 - Coal Mine Workers' Industrial Union (Mining-coal) Secretary: J. Yaniello (1910), F. F. Kuskowski (1917) active 1907-1917 | Solidarity, p.1,02.19.1916 ; Industrial Worker, 03/12/1910 ; Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.??; Industrial Union Bulletin, 08/31/1907 |
| Pennsylvania | Old Forge | Local No. 511 Branch 1 - (unknown) Secretary: Constantine de Rosa active 1917 | Branch Secretaries, Military Intelligence Files |
| Pennsylvania | Old Forge | Local No. 511 Polish Branch 2 - (unknown) active 1915 | 1916 Convention Proceedings |
| Pennsylvania | Old Forge | Local No. 97 - (mixed local) active 1914 | Brissenden (1919) , 364 |
| Pennsylvania | Parsons | Local No. 505 - (Mining-coal) Secretary: Angelo Nude active 1915-1917 | Solidarity, p.1,02.19.1916 ; Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| Pennsylvania | Parsons | Local No. 516 - (unknown) Secretary: Anon Parisee active 1910 | Industrial Worker, 03/12/1910 |
| Pennsylvania | Patton | Local No. 372 - (unknown) Secretary: P. Cox active 1907-1909 | Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 07/13/1907 |
| Pennsylvania | Philadelphia | - Metal Workers' Industrial Union (Metal) active 1907 | Industrial Union Bulletin, 11/16/1907 |
| Pennsylvania | Philadelphia | I.U. 100 - Marine Transport Workers No. 100 (Marine Transport) active 1917 | Minute Books (or subsequent document titles), Casefile 188032, Department of Justice Investigative Files, Part I: The Industrial Workers of the World, Research Collections in American Radicalism (microfilm), Reel 8. |
| Pennsylvania | Philadelphia | I.U. 1000 - Textile Workers' Industrial Union No. 1000 (Textile) active 1917 | Minute Books (or subsequent document titles), Casefile 188032, Department of Justice Investigative Files, Part I: The Industrial Workers of the World, Research Collections in American Radicalism (microfilm), Reel 8. |
| Pennsylvania | Philadelphia | I.U. 497 or Local No. 497 - Sugar Workers' Industrial Union No. 497 (Food) active 1917 | Minute Books (or subsequent document titles), Casefile 188032, Department of Justice Investigative Files, Part I: The Industrial Workers of the World, Research Collections in American Radicalism (microfilm), Reel 8. |
| Pennsylvania | Philadelphia | I.U. 600 - Railroad Workers' Industrial Union (Railroad) active 1916 | 1916 Convention Proceedings |
| Pennsylvania | Philadelphia | Local No. 100 - Tobacco Workers' Industrial Unon (Tobacco) active 1910 | Solidarity, 07/09/1910 |
| Pennsylvania | Philadelphia | Local No. 109 - Cigar Workers' Industrial Union (Tobacco) active 1916 | 1916 Convention Proceedings |
| Pennsylvania | Philadelphia | Local No. 11 - (unknown) Secretary: H. Davis active 1909-1911 | Industrial Worker, 09/09/1909 ; Industrial Worker, 01/05/1911 |
| Pennsylvania | Philadelphia | Local No. 11 Branch 2 - Metal Workers' Industrial Union (Metal) active 1910 | Solidarity, 07/09/1910 |
| Pennsylvania | Philadelphia | Local No. 183 - German Workers' Industrial Union (unknown) active 1911-1912 | Industrial Worker, 01/11/1912 |
| Pennsylvania | Philadelphia | Local No. 218 - (Textile) active 1907-1914 | Brissenden (1919) , 364 ; Industrial Union Bulletin, 08/24/1907 |
| Pennsylvania | Philadelphia | Local No. 251 - Railroad Workers' Industrial Union (Railroad) Chartered 10/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| Pennsylvania | Philadelphia | Local No. 404 - (Musicians) Secretary: Joe Shoefer active 1909-1914 | Brissenden (1919) , 364 ; Industrial Worker, 09/09/1909 |
| Pennsylvania | Philadelphia | Local No. 405 - (mixed local) active 1914 | Brissenden (1919) , 364 |
| Pennsylvania | Philadelphia | Local No. 405 Branch 1 - (mixed local) Secretary: W. Drebrewobski active 1914-1917 | Brissenden (1919) , 364 ; Branch Secretaries, Military Intelligence Files |
| Pennsylvania | Philadelphia | Local No. 412 - (Musicians) Secretary: H. Eingart active 1908-1909 | Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 02/08/1908 |
| Pennsylvania | Philadelphia | Local No. 414 - (unknown) Secretary: R. Walters active 1909 | Industrial Worker, 09/09/1909 |
| Pennsylvania | Philadelphia | Local No. 423 - (unknown) active 1908 | Industrial Union Bulletin, 05/16/1908 |
| Pennsylvania | Philadelphia | Local No. 425 - (Textile) Secretary: A. Debuigne (1909), Alfred Bailler (1917) active 1909-1917 | Brissenden (1919) , 364 ; Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Branch Secretaries, Military Intelligence Files ; Industrial Worker, 01/05/1911 |
| Pennsylvania | Philadelphia | Local No. 425 Branch 1 - (Textile) active 1914 | Brissenden (1919) , 364 |
| Pennsylvania | Philadelphia | Local No. 451 - (Furniture) active 1914 | Brissenden (1919) , 364 |
| Pennsylvania | Philadelphia | Local No. 494 - (unknown) active 1907 | Industrial Union Bulletin, 11/16/1907 |
| Pennsylvania | Philadelphia | Local No. 496 - Sugar Refinery Workers' Industrial Union (Food) active 1916 | 1916 Convention Proceedings |
| Pennsylvania | Philadelphia | Local No. 533 - (Textile) active 1914 | Brissenden (1919) , 364 |
| Pennsylvania | Philadelphia | Local No. 547 - (Reed and Rattan Workers) active 1913 | Solidarity, 07/12/1913 |
| Pennsylvania | Philadelphia | Local No. 57 - (mixed local) Secretary: Louis Hagyi active 1914-1917 | Brissenden (1919) , 364 ; Branch Secretaries, Military Intelligence Files |
| Pennsylvania | Philadelphia | Local No. 57 Branch 2 - (mixed local) active 1914 | Brissenden (1919) , 364 |
| Pennsylvania | Philadelphia | Local No. 599 - Coopers' Industrial Union (unknown) active 1916 | 1916 Convention Proceedings |
| Pennsylvania | Philadelphia | Local No. 610 - Salt Workers' Industrial Union (Mining) active 1916 | 1916 Convention Proceedings |
| Pennsylvania | Philadelphia | Local No. 612 - Shoe Repairers' Industrial Union (Shoes) active 1916 | Solidarity, p.1,09.30.1916 ; 1916 Convention Proceedings, p.?? |
| Pennsylvania | Philadelphia | Local No. 651 - (unknown) Started in April 1907 active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Pennsylvania | Philadelphia | Local No. 8 - (Marine transport) Led by Ben Fletcher, the local organized black and white longshoremen and controlled the Philadelphia docks until 1923. The IWW's most famous example of interacial unionism. active 1913-1928 | Peter Cole, Wobblies on the Waterfront |
| Pennsylvania | Pittsburgh | Local No. 143 - (unknown) Secretary: Michael Rheinhard active 1910-1911 | Industrial Worker, 03/12/1910 ; Industrial Worker, 01/05/1911 |
| Pennsylvania | Pittsburgh | Local No. 215 - (mixed local) Secretary: Geo W. Pearce active 1907-1914 | Brissenden (1919) , 364 ;Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Solidarity, 11/08/1913 ; Industrial Union Bulletin, 11/16/1907 ; Industrial Worker, 01/05/1911 |
| Pennsylvania | Pittsburgh | Local No. 291 - Tube and Pipe Mill Workers (Tube and Pipe) active 1910-1911 | Industrial Worker, 03/12/1910 ; Industrial Worker, 01/05/1911 |
| Pennsylvania | Pittsburgh | Local No. 293 - (unknown) active 1907-1911 | Industrial Worker, 01/05/1911 ; Industrial Union Bulletin, 10/26/1907 |
| Pennsylvania | Pittsburgh | Local No. 300 - Metal and Machinery Workers' Industrial Union (Metal and machinery) active 1919 | New Solidarity, 01/18/1919 |
| Pennsylvania | Pittsburgh | Local No. 350 - Vehicle Workers' Industrial Union (Vehicle) active 1915 | 1916 Convention Proceedings |
| Pennsylvania | Pittsburgh | Local No. 64 - (Machinists) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Pennsylvania | Pittsburgh | unknown - (mixed local) active 1909-1910 | Brissenden (1919) , 366 |
| Pennsylvania | Pittsburgh | unknown - (Packing house) active 1909-1910 | Brissenden (1919) , 366 |
| Pennsylvania | Pittsburgh | unknown - (Packing house) active 1909-1910 | Brissenden (1919) , 366 |
| Pennsylvania | Pittsburgh | unknown - (Steel workers) active 1909-1910 | Brissenden (1919) , 366 |
| Pennsylvania | Pittston | Local No. 502 - Coal Mine Workers' Industrial Union (Mining-coal) Secretary: Dante Seaviggi active 1916-1917 | Solidarity, p.1,02.19.1916 ; Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| Pennsylvania | Pittston | Local No. 509 - Coal Mine Workers' Industrial Union (Mining-coal) active 1915-1916 | Solidarity, p.1,02.19.1916 ; 1916 Convention Proceedings, p.?? |
| Pennsylvania | Pittston | Local No. 515 - (unknown) Secretary: G. Grechi active 1910 | Industrial Worker, 03/12/1910 |
| Pennsylvania | Plains | Local No. 503 - Coal Mine Workers' Industrial Union (Mining-coal) Secretary: Dante Seaviggi, A. Marsell active 1915-1917 | Solidarity, p.1,02.19.1916 ; ;Branch Secretaries, Military Intelligence Files ; 1916 Convention Proceedings, p.?? |
| Pennsylvania | Plainsville | Local No. 581 - Coal Mine Workers' Industrial Union (Mining-coal) active 1916 | 1916 Convention Proceedings |
| Pennsylvania | Port Richmond | Local No. 74 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Pennsylvania | Reading | Local No. 15 - (Metal and Machinery) active 1909-1911 | Solidarity, 08/13/1910 ; Industrial Worker, 01/05/1911 ; Brissenden (1919) , 366 |
| Pennsylvania | Scranton | I.U. 900 - Coal Miners' Industrial Union No. 900 (Mining-coal) active 1917 | Solidarity, p.1,04.14.1917 ; |
| Pennsylvania | Scranton | Local No. 511 - Italian Branch (mixed local) active 1909 | Industrial Worker, p. 1 May 6, 1909 |
| Pennsylvania | Scranton | Local No. 524 - (unknown) Secretary: T. Geotomo active 1909-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 |
| Pennsylvania | Shelly | Local No. 276 - (Tobacco) active 1914 | Brissenden (1919) , 364 |
| Pennsylvania | Taylor | Local No. 504 - (unknown) Secretary: F. Topelowski active 1917 | Branch Secretaries, Military Intelligence Files |
| Pennsylvania | Wilkinsburg | Local No. 150 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Pennsylvania | Woods Run | Local No. 292 - Car Builders (Car Building) active 1909-1911 | Industrial Worker, 03/12/1910 ; Brissenden (1919) , 366 ; Industrial Worker, 01/05/1911 |
| Pennsylvania | Wyoming | Local No. 580 - Coal Mine Workers' Industrial Union (Mining-coal) active 1916 | Covention |
| Quebec | Montreal | Local No. 229 - (unknown) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Rhode Island | Lymansville | - National HQ (Textile) Secretary: Francis Miller active 1910 | Industrial Worker, 03/12/1910 |
| Rhode Island | Mapleville | Local No. 166 - (Textile) active 1907 | Industrial Union Bulletin, 09/28/1907 |
| Rhode Island | Olneyville | Local No. 530 - (Textile) Secretary: T.J. Powers active 1907-1915 | Brissenden (1919) , 365 ; Solidarity, p.4,02.06.1915 ; Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 09/28/1907 ; Industrial Union Bulletin, 02/08/1908 ; Industrial Worker, 01/05/1911 |
| Rhode Island | Olneyville | Local No. 530 Belgian Branch 4 - (unknown) active 1915 | 1916 Convention Proceedings |
| Rhode Island | Pawtucket | unknown - Textile Workers (Textile) active 1906-1907 | Brissenden (1919) , 134 |
| Rhode Island | Providence | Local No. 114 - (Brewery workers) active 1907 | Industrial Union Bulletin, 09/07/1907 |
| Rhode Island | Providence | Local No. 121 - (unknown) active 1907-1911 | Industrial Worker, 01/05/1911; Industrial Union Bulletin, 11/16/1907 |
| Rhode Island | Providence | Local No. 121 Italian branch - (unknown) Chartered 06/1907 active 1907 | Industrial Union Bulletin, 09/07/1907 |
| Rhode Island | Providence | Local No. 151 - (Clothing) active 1910-1911 | Solidarity, 08/13/1910 ; Industrial Worker, 01/05/1911 |
| Rhode Island | Providence | Local No. 279 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Rhode Island | Providence | Local No. 292 - (unknown) active 1907-1908 | Industrial Union Bulletin, 08/24/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Rhode Island | Providence | Local No. 379 - (Public service) active 1910 | Solidarity, 10/01/1910 |
| Rhode Island | Providence | Local No. 404 - Bakery Workers' Industrial Union (Baking) active 1910-1916 | 1916 Convention Proceedings ; Solidarity, 07/23/1910 ; Industrial Worker, 01/05/1911 |
| Rhode Island | Providence | Local No. 530 - National Textile Industrial Union (Textile) active 1915 | Solidarity, p.4,02.06.1915 ; |
| Rhode Island | Providence | unknown - (Metal workers) active 1909-1910 | Brissenden (1919) , 366 |
| Rhode Island | Providence | unknown - (mixed local) active 1909-1910 | Brissenden (1919) , 366 |
| Rhode Island | Woonsocket | Local No. 513 - (Textile) Secretary: Francis Smith active 1907-1917 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Brissenden (1919) , 365 ; ; Branch Secretaries, Military Intelligence Files ; Industrial Union Bulletin, 09/28/1907 ; Industrial Worker, 01/05/1911 |
| Rhode Island | Woonsocket | Local No. 513 Branch 1 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Rhode Island | Woonsocket | Local No. 99 - (unknown) Secretary: C.A. Ulderico active 1909-1911 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Worker, 01/05/1911 |
| Rhode Island | Woonsocket | unknown - (mixed local) active 1909-1910 | Brissenden (1919) , 366 |
| Saskatchewan | Moose Jaw | - Moose Jaw Propaganda League (Propaganda) active 1914 | 1916 Convention Proceedings |
| South Carolina | Belton | Local No. 211 - Textile Workers' Industrial Union (Textile) active 1914 | 1916 Convention Proceedings |
| South Carolina | Dalzell | Local No. 516 - (unknown) active 1907 | Industrial Union Bulletin, 10/19/1907 |
| South Carolina | Easley | Local No. 537 - (Textile) Secretary: F.M. Spearman active 1914-1917 | Brissenden (1919) , 365 ; Branch Secretaries, Military Intelligence Files |
| South Carolina | Greenville | Local No. 512 - (Textile) Secretary: I.A. Brothers active 1914-1917 | Brissenden (1919) , 365 ; Branch Secretaries, Military Intelligence Files |
| South Dakota | Mellette | Local No. 439 - (unknown) active 1915 | Solidarity, p.4,08.21.1915 ; |
| Tennessee | Memphis | Local No. 506 - (unknown) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Texas | Blue Mound | Local No. 532 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Texas | Galveston | Local No. 3 - (Marine transport) active 1914 | Brissenden (1919) , 365 |
| Texas | Houston | Local No. 165 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Texas | Houston | Local No. 270 - (unknown) active 1907-1908 | Industrial Union Bulletin, 08/31/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Texas | San Antonio | Local No. 185 - Mixed Industries (mixed local) active 1906-1907 | Brissenden (1919) , 135 ; Industrial Union Bulletin, 08/31/1907 |
| Texas | Thurber | Local No. 512 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Utah | Halper | Local No. 327 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Utah | Riverton | Local No. 549 - (unknown) Started in 1907 active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Utah | Salt Lake City | Local No. 10 - (unknown) active 1907-1908 | Industrial Union Bulletin, 11/16/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Utah | Salt Lake City | Local No. 114 - Domestic Workers' Industrial Union (Domestic) active 1916 | 1916 Convention Proceedings |
| Utah | Salt Lake City | Local No. 202 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Utah | Salt Lake City | Local No. 345 - (unknown) Secretary: J. Wilson active 1913-1917 | Branch Secretaries, Military Intelligence Files ; Solidarity, 12/06/1913 |
| Utah | Salt Lake City | Local No. 69 - (mixed local) Secretary: A. Rowan active 1911-1915 | Brissenden (1919) , 365 ; Solidarity, p.1, Solidarity, p.4,04.24.1915, 05.01.1915, 09.18.1915 ; Solidarity, 08/30/1913 ; Industrial Worker, 01/05/1911 |
| Utah | Salt Lake City | Local No. 695 - (unknown) Secretary: J. Wilson active 1917 | Branch Secretaries, Military Intelligence Files |
| Vermont | Barre | - Musicians' Industrial Union (Music) active 1907 | Industrial Union Bulletin, 11/16/1907 |
| Vermont | Barre | Local No. 117 - (unknown) Secretary: Peter Bianchi active 1917 | Branch Secretaries, Military Intelligence Files |
| Vermont | Barre | Local No. 410 - (unknown) Secretary: L. Marchetto active 1907-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 12/21/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Vermont | Montpelier | Local No. 7 - (unknown) Secretary: F. Rossi active 1907-1910 | Industrial Worker, 03/12/1910 ; Industrial Union Bulletin, 10/26/1907 |
| Vermont | Waterbury | Local No. 176 - (unknown) Secretary: N. Imbruglio active 1909-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 |
| Virginia | Newport News | Local No. 30 - (Machinists) active 1907-1908 | Industrial Union Bulletin, 09/07/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Virginia | Norfolk | Local No. 4 - (Marine transport) Secretary: Jos. Aspilqusta active 1914-1917 | Brissenden (1919) , 365 ; Branch Secretaries, Military Intelligence Files |
| Virginia | Port Norfolk | Local No. 39 - (unknown) active 1907 | Industrial Union Bulletin, 11/16/1907 |
| Virginia | Portsmouth | Local No. 39 - (Machinists) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Virginia | Richmond | Local No. 9 - (unknown) active 1907 | Industrial Union Bulletin, 11/16/1907 |
| Washington | Aberdeen | Local No. 354 - (unknown) Secretary: C.G. Wertenbaker active 1907-1912 | Industrial Worker, 03/12/1910, Industrial Union Bulletin, 08/24/190, Industrial Union Bulletin, 02/08/1908, Industrial Worker, 01/05/1911, Industrial Worker, 03/14/1912 |
| Washington | Aberdeen | Local No. 448 - Fishery and Cannery Workers' Industrial Union (Fishery and Cannery) active 1919 | New Solidarity, 10/25/1919 |
| Washington | Anacortes | Local No. 314 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Washington | Anacortes | Local No. 316 - (unknown) Secretary: Al Enstrom active 1910 | Industrial Worker, 03/12/1910 |
| Washington | Anacortes | unknown - (Lumber) active 1909-1910 | Brissenden (1919) , 366 |
| Washington | Ballard | Local No. 388 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Washington | Bellingham | Local No. 418 - (unknown) active 1908 | Industrial Union Bulletin, 02/08/1908 |
| Washington | Blaine | Local No. 319 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Washington | Burnett | I.U. 236 - Coal Miners' Industrial Union (Mining-coal) active 1910 | Solidarity, 12/17/1910 |
| Washington | Burnett | Local No. 234 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Washington | Everett | Local No. 248 - (unknown) active 1911 | Industrial Worker, 01/11/1912 |
| Washington | Greenwater | Local No. 116 - (unknown) active 1907 | Industrial Union Bulletin, 10/26/1907 |
| Washington | Hoquiam | Local No. 276 - (unknown) active 1907 | Industrial Union Bulletin, 10/19/1907 |
| Washington | Rainier | Local No. 542 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Washington | Raymond | Local No. 433 - Lumber Workers' Industrial Union (Lumber) Chartered 10/1911 active 1911-1912 | Industrial Worker, 01/11/1912 |
| Washington | Seattle | I.U. 325 - Shipbuilders' Industrial Union No. 325 (Ship building) Raided in 03/1919 active 1917-1919 | Minute Books (or subsequent document titles), Casefile 188032, Department of Justice Investigative Files, Part I: The Industrial Workers of the World, Research Collections in American Radicalism (microfilm), Reel 8. ; New Solidarity, 05/17/1919 |
| Washington | Seattle | I.U. 700 - Marine Tranport Workers' Industrial Union No. 700 (Marine Transport) active 1917-1919 | Minute Books (or subsequent document titles), Casefile 188032, Department of Justice Investigative Files, Part I: The Industrial Workers of the World, Research Collections in American Radicalism (microfilm), Reel 8. ; New Solidarity, 05/17/1919 |
| Washington | Seattle | Local No. 121 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Washington | Seattle | Local No. 132 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Washington | Seattle | Local No. 178 - (mixed local) Secretary: Aug. Wangeman (1909), Thos. Whitehead (1917) active 1907-1917 | Brissenden (1919) , 365 ; Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Branch Secretaries, Military Intelligence Files ; Industrial Union Bulletin, 03/09/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Washington | Seattle | Local No. 178 Branch 2 - (mixed local) Secretary: Ed. Mattson active 1914-1917 | Brissenden (1919) , 365 ; Branch Secretaries, Military Intelligence Files |
| Washington | Seattle | Local No. 179 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Washington | Seattle | Local No. 194 - (Clothing) active 1912-1913 | Vincent St. John (1917) ; Solidarity, 03/29/1913 |
| Washington | Seattle | Local No. 223 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Washington | Seattle | Local No. 252 - (Marine transport) Secretary: Thos. Whitehead. Chartered 11/1911 active 1911-1917 | Brissenden (1919) , 365 ; Solidarity, p.4,07.29.1916 ; Branch Secretaries, Military Intelligence Files ; Industrial Worker, 01/11/1912 |
| Washington | Seattle | Local No. 317 - (Lumber) active 1914 | Brissenden (1919) , 365 |
| Washington | Seattle | Local No. 382 - (mixed local) Secretary: W.J. Morris (1909), Thos. Whitehead (1917) active 1909-1917 | Brissenden (1919) , 365 ; Solidarity, p.3,04.11.1914 ; Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Branch Secretaries, Military Intelligence Files |
| Washington | Seattle | Local No. 382 - (unknown) active 1908 | Industrial Union Bulletin, 05/23/1908 |
| Washington | Seattle | Local No. 400 - (Public service) active 1914 | Brissenden (1919) , 365 ; 1914 Polk Directory, ; |
| Washington | Seattle | Local No. 427 - (Food) active 1914 | Brissenden (1919) , 365 ; 1914 Polk Directory, ; |
| Washington | Seattle | Local No. 432 - (Lumber) Secretary: Wm. Liebrecht active 1909-1917 | Brissenden (1919) , 365 ; Solidarity, p.4,01.30.1915, 04.14.1917 ; Casefile 188032, Department of Justice Investigative Files, Part I: The Industrial Workers of the World, Research Collections in American Radicalism (microfilm), Reel 8. ; Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 |
| Washington | Seattle | Local No. 432 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Washington | Seattle | Local No. 500 - Lumber Workers' Industrial Union (Lumber) active 1919 | New Solidarity, 01/18/1919 |
| Washington | Seattle | Local No. 573 - Construction Workers' Industrial Union (Construction) active 1919 | New Solidarity, 02/08/1919 |
| Washington | Seattle | Local No. 675 - (Lumber) active 1914 | Brissenden (1919) , 365 ; 1914 Polk Directory, ; |
| Washington | Seattle | Local No. 131 - (unknown) Secretary: A.C. Cole active 1909-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 |
| Washington | Seattle | Local No. 178, branch 3 - (unknown) Secretary: Frits A. Main active 1917 | Branch Secretaries, Military Intelligence Files |
| Washington | Seattle | Local No. 178, Swedish/Scandinavian Branch 3 - (unknown) active 1914 | 1916 Convention Proceedings |
| Washington | Seattle | unknown - (Hospitality) active 1909-1910 | Brissenden (1919) , 366 |
| Washington | Sedro-Woolley | Local No. 312 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Washington | Spokane | A.W.O. 400 - Agricultural Workers' Organization No. 400 (Agriculture) active 1917 | Minute Books (or subsequent document titles), Casefile 188032, Department of Justice Investigative Files, Part I: The Industrial Workers of the World, Research Collections in American Radicalism (microfilm), Reel 8. |
| Washington | Spokane | I.U. 500 - Lumber Workers' Industrial Union No. 500 (Lumber) active 1917 | Minute Books (or subsequent document titles), Casefile 188032, Department of Justice Investigative Files, Part I: The Industrial Workers of the World, Research Collections in American Radicalism (microfilm), Reel 8. |
| Washington | Spokane | Local No. 132 - (unknown) Secretary: Chas. Brown active 1909-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 |
| Washington | Spokane | Local No. 222 - (unknown) Secretary: W.H. Douglas active 1907-1916 | Solidarity, p.1,08.12.1916 ; Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 ; Industrial Union Bulletin, 05/11/1907 ; Industrial Union Bulletin, 02/08/1908 ; Industrial Worker, 01/05/1911 |
| Washington | Spokane | Local No. 223 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Washington | Spokane | Local No. 315 - (Lumber) Secretary: Richard Brasier active 1914-1917 | Brissenden (1919) , 365 ; Solidarity, p.4,02.05.1916 ; Branch Secretaries, Military Intelligence Files |
| Washington | Spokane | Local No. 358 - (Brewers) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Washington | Spokane | Local No. 423 - (unknown) Secretary: F.W. Shwartz active 1909-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 |
| Washington | Spokane | Local No. 424 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Washington | Spokane | Local No. 434 - (unknown) Secretary: Hugh A. Hanley active 1909-1910 | Industrial Worker, 03/12/1910 ;Industrial Worker, 09/09/1909 |
| Washington | Spokane | Local No. 183 - Cement Workers (Construction) active 1906-1907 | Brissenden (1919) , 135 |
| Washington | Tacoma | Local No. 1100 - Hotel, Restaurant, and Domestic Workers' Industrial Union (Hotel, Restaurant, and Domestic) active 1919 | New Solidarity, 07/19/1919 |
| Washington | Tacoma | Local No. 169 - (mixed local) active 1907-1914 | Brissenden (1919) , 365 ; Industrial Union Bulletin, 10/19/1907 ; Industrial Union Bulletin, 02/08/1908 |
| Washington | Tacoma | Local No. 338 - (Lumber) Secretary: Sam Nelson active 1914-1917 | Brissenden (1919) , 365 ; Branch Secretaries, Military Intelligence Files |
| Washington | Tacoma | Local No. 380 - (Marine transport) Secretary: A. Payne (1909), Dan Thompson (1917) active 1907-1917 | Brissenden (1919) , 365 ; Solidarity, p.3,1916.02.19 ; Industrial Worker, 09/09/1909 ; Branch Secretaries, Military Intelligence Files ; Industrial Worker, 01/05/1911; Industrial Worker, 01/04/1912 ; Industrial Union Bulletin, 08/24/1907 |
| Washington | Tacoma | Local No. 500 - Lumber Workers' Industrial Union (Lumber) active 1919 | New Solidarity, 03/08/1919 |
| Washington | Tacoma | Local No. 545 - (Smelting) active 1907 | Industrial Union Bulletin, 04/20/1907 |
| Washington | Vancouver | Local No. 544 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Washington | Wenatchee | Local No. 76 - (unknown) active 1910 | Solidarity, 07/23/1910 |
| Wisconsin | Lohrville | Local No. 364 - Quarry Workers' Industrial Union Local 364 (Quarry) active 1916 | Solidarity, p.1,04.29.1916 ; 1916 Convention Proceedings, p.?? |
| Wisconsin | Marblehead | Local No. 364 - (Quarry) active 1916 | 1916 Convention Proceedings |
| Wisconsin | Milwaukee | Local No. 118 - (mixed local) active 1914 | Brissenden (1919) , 365 |
| Wisconsin | Milwaukee | Local No. 122 - (unknown) active 1907 | Industrial Union Bulletin, 08/24/1907 |
| Wisconsin | Milwaukee | Local No. 123 - (unknown) active 1907 | Industrial Union Bulletin, 03/30/1907 |
| Wisconsin | Milwaukee | Local No. 9 - (Brewery workers) active 1907 | Industrial Union Bulletin, 08/31/1907 |
| Wisconsin | Superior | Local No. 247 - (unknown) active 1911 | Industrial Worker, 01/05/1911 |
| Wisconsin | Superior | Local No. 500 - Lumber Workers' Industrial Union (Lumber) active 1919 | New Solidarity, 04/05/1919 |
| Wisconsin | Superior | Local No. 800 - Metal Mine Workers' Industrial Union (Mining-metal) active 1919 | New Solidarity, 04/05/1919 |
| Wyoming | Cheyenne | Local No. 140 - (unknown) Secretary: Louis Moreau active 1910-1915 | Solidarity, p.3,08.14.1915 ; - Industrial Worker, 03/12/1910 |