- Professor Emeritus
Ph.D. Stanford University 1973
A history of the Colombian Left.
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, 2001).