Donald A. Hall Estate Collection
Army Air Service Biplane Trainer Serial 671 on Flight Line (Circa 1923)

Donald A. Hall Sr. photographed this two-bay military biplane trainer resting on a grass airfield beside an open hangar. Sporting U.S. military rudder stripes and fuselage identification number 671, the aircraft stands with a gentleman in a dark three-piece suit and bowler hat alongside the cockpit. The negative preserves early military pilot training infrastructure, featuring wooden interplane struts, external control cables, and a liquid-cooled engine installation.