The Official Crossword Puzzle Magazine. New York: Simon and Schuster, Spring 1933

The Official Crossword Puzzle Magazine. New York: Simon and Schuster, Spring 1933, Volume: Gilbert D728. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/526908 Accessed December 27, 2025.