Men working inside of the HK-1, Hughes Flying Boat on Terminal Island in the Los Angeles Harbor. Transcribed from note on back of photo: "Inside the Boat: Shown in a view looking toward the tail of the Hughes Flying Boat, the man is dwarfed by the giant interior of the airplane."
Transcribed from attached press release: "Howard Hughes, right, noted aircraft designer and industrialist is shown for the first time on the flight deck of the famed Hughes flying boat, which he designed and built. It is the largest airplane in the world. The plane is now nearing completion on Terminal Island, in Los Angeles-Long Bay Harbor, May 12, 1947." Los Angeles Harbor is now known as Long Beach Harbor, California.