World Detective Magazine. New York: World Association of Detectives, Inc., August 1935

World Detective Magazine. New York: World Association of Detectives, Inc., August 1935, Volume: Gilbert E291. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/528081 Accessed December 14, 2025.