Materials include photographs from 1934 to 1972 of aircraft built by the Hughes Aircraft Company. The photographs primarily depict the XF-11 Prototype planes and the HK-1 Hercules, otherwise known as the "Flying Boat" or the "Spruce Goose," piloted by Howard Hughes. The photographs also depict the DC-3, XH-17 Flying Crane helicopter, the H-1 Racer piloted by Hughes, aircraft built for Trans World Airlines and Avro Canada, Lockheed planes, and other aircraft piloted by Hughes in various flying competitions.