Ph.D. Stanford University 1973.
Labor and the Course of American Democracy. U.S. History in Latin
American Perspective. London: Verso, 1996.
Labor in Latin America: Comparative Essays on Chile, Argentina, Venezuela,
and Colombia. Stanford: Stanford University Press, 1986. Spanish edition:
Bogotá, Colombia: Siglo XXI, 1988.
Coffee and Conflict in Colombia, 1886-1910. Durham, North Carolina:
Duke University Press, 1978; 2nd ed., 1986. Spanish editions: Medellín,
Colombia: Fundación Antioqueño de Estudios Sociales, 1981;
Bogotá: El Ancora, 1999.
Also, edited books on development theory and labor in the world economy,
and two volumes on the current situation in Colombia: Violence in Colombia:
The Contemporary Crisis in Historical Perspective, (Wilmington, Delaware:
Scholarly Resources, 1992) and Violence in Colombia, 1990-2000: Waging
War and Negotiating Peace, (Wilmington, Delaware: Scholarly Resources,
Research in Progress
A history of the Colombian Left.