Major General William L Kenly, Director of Military Aeronautics from May 20, 1918 to August 28, 1918. During this period, he was the titular head of the newly established United States Army Air Service.
United States Air Force
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.