Photograph of an unidentified aircraft (tail number NX2939), circa 1910s-1930s. "Big Bear Lake, Calif." Is painted on the fuselage, along with emblems for Sammy Mason's Hollywood Hawks and Kendall oil.
Photograph of people with an unidentified aircraft, circa 1910s-1930s. The man and woman in the foreground hold a propeller. "Checkered Air Service" is painted on the aircraft's tail.
Photograph (reproduction) of buildings at Mills Field, California, circa 1910s-1930s. Inscription: "Mills Field [written backward on negative]."Inscription on envelope: "Mills Field."
Photograph of two unidentified aircraft in flight above a field, Martin Field, circa 1910s-1930s.Inscription: "Martin Field [written backwards on negative]."