Photograph of the cockpit interior and instrument panel of a North American BT-9 Yale aircraft, circa 1940.
Inscription on verso: "This is the inside of the cockpit and some of the things we have to look out for and operate. We have airadio an [and]…
Photograph of the instrument board in a Boeing Model 247D cockpit, likely taken in China, circa 1934-1937. Photo from album page 67.Inscription on album page: "Instrument board in pilot's cockpit."Part of the Julius A. Barr photograph album…