Photograph of a German observation balloon, circa 1914-1918. Several servicemen hold the balloon's tethers. A balloon winch is visible on the left side of the scene.
Photograph of Glenn Curtiss operating a motor ice boat on Lake Keuka, Hammondsport, New York, circa 1900s-1910s.
Caption on envelope: "Glenn Curtiss on motor ice boat / Hammondsport, New York."
Caption on negative: "Motor ice boating / Lake Keuka,…
Photograph (reproduction) of a Gourdou-Leseurre aircraft, circa 1910s-1930s.
Typed caption: "Jagdeinsitzer Gourdou-Lesseure (420 PS 'Jupiter' motor), mit dem die Mehrzahl der französischen Jagdfliegen formationen ausgerüstet ist."
Photograph of a Handley Page Hamlet aircraft (fuselage number G-EBNS), circa 1926.Inscription on envelope: "English Handley Page / 'Eindecker mit geschlossenem spaltflugel' / 1926."