Aerospace enthusiasts frequently collect themed memorabilia, including ephemeral material such as envelopes and stamps. Various governments and entities issue these at commemorative anniversaries and events. The Museum inevitably became a repository for such material over time. Although no longer in the Museum’s collecting scope, this these stamps, first day of issue envelopes, and other aerospace related postal material (aerophilately) make up this collection.

This collection contains correspondence relating to Air Mail accidents in spring 1934.

Richard M. Denbo was born on March 10, 1897 in Salt Lake City, Utah. Denbo served as an aviation engine mechanic. He transferred his interest as an auto mechanic to aircraft engines when he enlisted in the Army Air Corps in 1917. He was assigned to the 80th as Chauffeur-Mechanic in the 805th Aero Squadron in France and England between January 22, 1918, and June 5, 1919.

Lee Francis Duncan was a member of the early U.S. air mail crews. He also flew for United Airlines and was a member of the Army during World War II.

Elmer Leonhardt was an early Airmail Pilot.