A section of Howard Hughes' "Spruce Goose" or "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.
Description given with photo: "Surprise To Everyone - San Pedro, Calif. : Millionaire planemaker Howard Hughes is surrounded by members of the press after successfully taking his 200-ton flying boat into the air in a surprise flight during initial taxi tests in Los Angeles harbor. Credit (ACME) 11/5/47."