Arthur E. Easterbrook (1893-1950) held a long career with the U.S. Air Force, beginning as an observer during World War I and later as a recruiter and commanding officer at numerous bases. The collection contains photographs, clippings, and paper ephemera relating to Easterbrook's life and military career.

The collection contains photographs of Curtiss Jennys at Love Field, Texas flown by Norman E. Horn in his training as a pilot during World War I.

Sergeant Sol E. Hutton served with the U.S. Army Air Service in Italy during World War I, where he worked with Caproni on aircraft construction. The collection contains items related to the U.S. Air Service program to build Caproni Ca.44 (Military Ca.5, Ca.600) aircraft at the end of the war.

The collection contains a photograph album from the World War I career of Herman J. Sommerhauser (1895-1949), who may have served with the U.S. Army Air Service, 650th Aero Squadron in France.

The collection contains a World War I era scrapbook photograph album assembled by Edward I. Sproull (1897-1956) while in training at Ohio State University and subsequently serving as a pilot with the A.E.F. and the American Squadron of the French Military Air Force in France.

Frederick Staples (1893-1958) was born in Leighwood, Devon County, England. Staples served with the United States (U.S.) Army American Expeditionary Forces (AEF), 34th Aero Squadron, in France during World War I. The collection is comprised of a photograph album and a small amount of textual materials collected by Staples during his 1917-1919 service.

J. M. Wilson served in England with the U.S. Army Air Service during World War I. His notebook contains training notes primarily on aircraft engines.