Philosophy 241- Existentialism and Marxism: correspondence, bibliographies, "Studies in Soviet Thought", lecture notes, 1965, 1971

Philosophy 241- Existentialism and Marxism: correspondence, bibliographies, "Studies in Soviet Thought", lecture notes, 1965, 1971, Box: 29, Folder: 10. 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/316248 Accessed December 27, 2025.