Super-Mystery Comics. Springfield, Mass.: Periodical House, Inc., July 1940

Super-Mystery Comics. Springfield, Mass.: Periodical House, Inc., July 1940, Volume: Gilbert D1018. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/527660 Accessed December 27, 2025.