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 press release from back of photograph: "Howard Hughes' flying boat, world's largest plane, rides free off Terminal Island in Los Angeles Harbor immediately after its launching yesterday. The plane's vertical stabilizer tip rides about 80 feet above the water as the air giant floats for the first time. With Hughes at the controls, the colossal craft will get first water taxi tests today."