"Soviet Ethics and Soviet Society", "An Obscure Criticism", "Value Theory in Soviet Philosophy: A Western Confrontation", correspondence, postcards, 1963 - 1965

"Soviet Ethics and Soviet Society", "An Obscure Criticism", "Value Theory in Soviet Philosophy: A Western Confrontation", correspondence, postcards, 1963 - 1965, Box: 27, Folder: 23. 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/316170 Accessed March 03, 2026.