First Lieutenant James H. Doolittle, (left) winner of Schneider Cup Race, with 1st Lt. Cyrus Bettis, winner of Pulitzer Trophy Race, both events in October 1925.
United States Air Force
1925
Maurer Maurer, 1987, Aviation in the US. Army, 1919-1938, United States Air Force Historical Research Center, Office of Air Force History,  United States Air Force, Washington, D.C.