American Crossword Magazine; Official Publication of the American Crossword Society. New York: Crosswords, Inc., November 1939

American Crossword Magazine; Official Publication of the American Crossword Society. New York: Crosswords, Inc., November 1939, Volume: Gilbert D45. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/525143 Accessed December 27, 2025.