Gateway. The Magazine of the Airline Passengers Association. San Antonio, Texas: Texas Parade, Inc., January/February 1978

Gateway. The Magazine of the Airline Passengers Association. San Antonio, Texas: Texas Parade, Inc., January/February 1978, Volume: Gilbert D386. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/526060 Accessed December 28, 2025.