Browse Items (470 total)

Photograph of a Douglas O-25A aircraft (fuselage number 6), circa 1930s.

Photograph of a Douglas YO-31A aircraft (tail number 8) parked near a California National Guard hangar, circa 1930s.

Photograph of a Douglas YO-31A aircraft (tail number 8) parked near a California National Guard hangar, circa 1930s.

Photograph of a U.S. Army Air Corps Douglas YO-31A aircraft, February 5, 1933.Caption: "Douglas YO31A / (G-1-92P-115) / 2-5-33."

Photograph of a California National Guard Douglas O-38B aircraft, circa 1930s-1940s.

Photograph of a man working on the engine of a Douglas O-38B aircraft (fuselage number 9), circa 1930s-1940s.

Photograph of a California National Guard Douglas O-38B aircraft, circa 1930s-1940s.

Photograph of five U.S. Army Air Corps Douglas O-38 aircraft in flight over mountainous terrain, February 6, 1931. Caption: "(O38 92-P-115) (2-6-31) (12-4100)."

Photograph of a Douglas O-38 aircraft in low flight over a field, circa 1930s-1940s.

Photograph of five U.S. Army Air Corps Douglas O-38 aircraft in flight over mountainous terrain, February 6, 1931. Caption: "(O37 92-P-115) (2-6-31) (12-4100)."