Photograph of the Curtiss Model H "America" seaplane on Lake Keuka, Hammondsport, New York, circa 1910s-1930s. Caption on envelope: "America on water / Lake Keuka / Hammondsport, New York / 40."
Photograph of a De Havilland D.H.4 ambulance aircraft (fuselage designation A.S. 68188), circa 1910s-1930s. A compartment on the fuselage is open to show a rescue basket.Caption on envelope: "DH-4 ambulance / 3/4 rear / 43."
Photograph of a SPAD XIII aircraft (tail number S16541, fuselage number 25) of the 22nd Pursuit Squadron, U.S. Army Air Service, circa 1917-1920s. The squadron's "shooting star" emblem is visible on the fuselage.Caption on envelope: "SPAD XIII / 22nd…