The New Marine Blue Book and Directory of Marine Dealers, Service Stations, Display Rooms. New York: Gordon P. Manning, January 1937

The New Marine Blue Book and Directory of Marine Dealers, Service Stations, Display Rooms. New York: Gordon P. Manning, January 1937, Volume: Gilbert E151. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/526844 Accessed December 27, 2025.