From the Howard Cannon Photograph Collection (PH-00192). Howard Cannon, Alan Bible, United States Air Force Major H. J. Stewart, United States Navy Captain C. W. Smith, United States Navy Captain W. W. Schweer, and United States Marine Corps Colonel F. R. Wilkinson (individuals' places are unidentified).
Description given with photo: "Poised For Trial Run, San Pedro, Calif.: Two engineers are dwarfed by the four right wing engines of Howard Hughes' mammoth plywood flying boat as the 200-tom craft is readied for taxi tests in Los Angeles harbor on November 1st. While completing taxi runs on the following day, Hughes casually lifted the big plane into the air for an unscheduled half-mile flight. Credit Line (ACME) 11/04/47."