[Curtiss O-39 Falcon]

Photograph of a United States Army Air Corps Curtiss O-39 Falcon aircraft (nose number 57) parked at an airfield, likely at the National Air Races in Ohio, circa 1930s.

Inscription: "U.S. Army. Curtiss O-39."

Inscription on verso: "Curtiss O-30 (without sliding top cover). Conq. 650. M20LB."

Item from page 27 of the LeRoy Milliren National Air Races photograph album, circa 1920s-1930s. Album contains one hundred ninety-eight (198) black-and-white photographs taken at the air races during this time period.