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.
Description given with photo: "Hercules Rolls Across Pontoon Bridge, Long Beach, Calif. -- The 220-foot, 60-ton fuselage-full, last section of Howard Hughes' $20,000,000 Flying Boat rolls across tricky pontoon bridge in Long Beach to complete a 28-mile trip to assembly dock at Terminal Island, Calif. The air giant is expected to try its wings early next year. Credit Line (ACME) NY."
A section of Howard Hughes' Flying Boat being moved (with a police escort) from the Hughes Aircraft plant in Culver City, California to Terminal Island in the Los Angeles Harbor where the plane was assembled in June of 1946. Date stamped on back of photo.