Gilbert Thrills Magazine, Science, Engineering, Experiments. New Haven, Conn.: The A.C. Gilbert Company, December 1935

Gilbert Thrills Magazine, Science, Engineering, Experiments. New Haven, Conn.: The A.C. Gilbert Company, December 1935, Volume: Gilbert E99. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/526076 Accessed December 27, 2025.