Photograph of a U.S. Army Air Corps Loening OA-2 aircraft (serial number A.C. 25-275), circa 1920s.Caption: "Keystone - Loening / OA2 Observation Amphibian."
Photograph of a U.S. Army Air Corps Loening OA-1A aircraft in a hangar, circa 1920s. The insignia for the "U.S. Army Pan-American Flight" is painted on the fuselage. The names of the crew (Captain Ira C. Eaker and Lieutenant Muir S. Fairchild) are…