From the Howard Cannon Photograph Collection (PH-00192). Stamped on verso: "John J Nulty Photographer 230 Tahoe Drive Carson City, Nevada Tel. GR. 2-2603"
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."