American Philosophical Association: correspondence regarding Richard Hudelson's "Marx's Empiricism"; De George commentary: "On 'Marx's Empiricism'", 1980

American Philosophical Association: correspondence regarding Richard Hudelson's "Marx's Empiricism"; De George commentary: "On 'Marx's Empiricism'", 1980, Box: 17, Folder: 57. Personal papers of Richard T. De George, PP 531. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/315679 Accessed March 13, 2026.