The collection contains information pertaining to the history of the US Army Air Corps and the United States Air Force. It includes general history, as well as subject folders on different wings, groups and squadrons. This collection has much information in it on somewhat obscure topics related to the USAF.

This collection contains personal material relating to the career of Maj. George Hallett. Hallett was an engineer who worked with Glenn Curtis on early airplanes in San Diego. He was in the Army Air Service during World War I. After the war he worked in the General Motors Research Lab and later as a consultant for Consolidated Aircraft.