Photograph of U.S. Navy servicemen and an unidentified aircraft on a ship deck, circa 1910s-1930s. A Southern Pacific steamship is visible in the background.
Photograph of military aircraft on display, including a Loening OL seaplane (fuselage number 25-228), circa 1910s-1930s. Inscription: "S.F. Airport [written backwards on negative]."Inscription on envelope: "S.F. Airport."
Photograph of a Douglas C-1 aircraft, circa 1920s. Inscription: "Douglas Transport / S.F. Airport [written backwards on negative]."Inscription on envelope: "Douglas Transport / S.F. Airport."
Photograph of a Curtiss JN-4 Jenny aircraft of the 90th Aero Squadron, U.S. Army Air Service, circa 1910s-1930s. The squadron's "pair of dice" emblem is painted on the fuselage.