[Men working on engine of Boeing Model 247D aircraft]

Photograph of three men working on the engine of a Boeing Model 247D aircraft, circa May 1935.

Inscription: "Servicing Boeing. May 1935. Cole, Hozzard, Tarantin."

Part of a photograph album related to Julius A. Barr's personal life and flying career in the United States and China, circa 1934-1935.