Bob Colt. Greenwich Conn.: Fawcett Publications, Inc., November 1950

Bob Colt. Greenwich Conn.: Fawcett Publications, Inc., November 1950, Volume: Gilbert D123. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/525330 Accessed December 27, 2025.