The Freethinker's Library. Girard, Kansas: Haldeman-Julius Publications, 1936

The Freethinker's Library. Girard, Kansas: Haldeman-Julius Publications, 1936, Volume: Gilbert C200. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/526017 Accessed March 23, 2026.