Douglas XO-31

Photograph of a United States Army Air Corps Douglas XO-31 aircraft (nose number 52) parked by a hangar, likely at the National Air Races in Ohio, circa 1930s.

Inscription: "U.S. Army. Douglas XO-31."

Inscription on verso: "Douglas XO-31. Conk 650. XA20LM."

Inscription underneath photograph on album page: "Douglas XO-31 1/4 side."

Item from page 34 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.