Progress; A Magazine Devoted to New Items of Daily Life. New York: The Progress Corporation, March 1937

Progress; A Magazine Devoted to New Items of Daily Life. New York: The Progress Corporation, March 1937, Volume: Gilbert D823. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/527155 Accessed December 27, 2025.