Howard Hughes (wearing hat) receives congratulations from Mayor Fiorello La Guardia at Floyd Bennett Airport in Brooklyn. The gentleman wearing a polka dot bow tie, standing behind the mayor is Grover Whalen. Mr. Whalen was president of the 1939 New York World's Fair.
Transcribed from back of photo: "Howard Hughes (in cockpit) warms up the XF-11 for its initial test flight. It is one of the world's fastest long-range photographic planes, July 7, 1946."
Description printed on photograph's accompanying sheet of paper: "Howard Hughes being escorted through crowd after delivering an address at the National Press Club on July 21."