Lewis, R. L., & Foner, P. S. (1979). The Black worker during the era of the American Federation of Labor and the railroad brotherhoods. Philadelphia: Temple University Press.

Lewis, Ronald L., and Philip Sheldon Foner. The Black Worker During the Era of the American Federation of Labor and the Railroad Brotherhoods. Philadelphia: Temple University Press, 1979.

Lewis, Ronald L., and Philip Sheldon Foner. The Black Worker During the Era of the American Federation of Labor and the Railroad Brotherhoods. Philadelphia: Temple University Press, 1979.