Junkers Commercial Airplane G 31
A 1927 NACA aircraft circular issued by the National Advisory Committee for Aeronautics, documenting the Junkers G 31 commercial airplane for technical and engineering readers. The pictures are black-and-white photographs of the cockpit instrument panel, the wing and fuselage exterior, and the cabin seating and interior fittings, which a designer might use for period aviation detail, industrial instrument layouts, or mid-century technical photography.
