"Values and Value Theory in Marxism-Leninism", "Marxist Values and Soviet Society", correspondence, 1963 - 1964

"Values and Value Theory in Marxism-Leninism", "Marxist Values and Soviet Society", correspondence, 1963 - 1964, Box: 27, Folder: 22. 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/316169 Accessed March 03, 2026.