Description printed on photograph's accompanying strip of paper: "Howard Hughes speaking into a mike at Paris before leaving for Moscow on the second leg of his round the world flight 7-12-1938"
Description given with photo: "Hughes Pilots Radar-Equipped Plane Culver City, Calif. -- First passenger plane equipped with radar is flown in demonstration May 1st by Howard Hughes (left) and co-pilot R.C. Loomis over Culver City. Pilots using this equipment will be warned of approaching obstacles by lights flashing on radar panel. Two lights (lefts) with 2,000-foot range, are used to guarantee clearance over mountains; two lights (right) with 500-foot range, are a safety device for approaches and landings. Either set of lights warns against approaching aircraft. Trans-World Airline plans to install radar on its passenger planes. Credit (ACME) 5-3-47."
Back of the postcard. Some of the wording is not readable. It looks like the postcard was sent to a woman, Miss Stewart of California, from Paul Smith.
Description printed on photograph's accompanying sheet of paper: "Howard Hughes is appointed Aeronautic Adviser to the New York Worlds Fair 1939 by Grover Whalen, its president."