A front view of HK-1, Hughes Flying Boat, the world's largest plane, which successfully completed its first flight, shown in the photo. The eight 3,000 horsepower engine lifted the craft from the waters of Los Angeles Harbor with Hughes at the controls. The huge wings, with a span of 320 feet carried the aircraft for one mile at a 100-mile per hour speed before Hughes put it back on the water.

An image of children gathered together, possibly for the 4th of July at City Hall in Boulder City, Nevada. Girls donning heart shaped hats stand next to boys sporting decorated cone hats.

A side view of the HK-1, Hughes Flying Boat, the world's largest plane, which successfully completed its first flight. The eight 3,000 horsepower engine lifted the craft from the waters of Los Angeles Harbor with Hughes at the controls.

The black and white view of Howard Hughes exiting his Lockheed 14 aircraft after performing the final landing on the Round the World flight at Floyd Bennett Airport, New York. Description printed on photograph's accompanying sheet of paper: "World fliers greeted on arrival. Floyd Bennett Airport--- Minutes after he and his companions set their plane down here, completing a dramatic dash around the world, Howard Hughes, wearing the same battered hat, his face covered by a heavy stubble, stepped from the plane, to be greeted by Mayor La Guardia, in the photo are, left to right: Ed Lund, flight mechanic, Howard Hughes, Thomas Thurlow, navigator; Harry P. M. Connor, navigator, and Mayor La Guardia. Credit Line (ACME) 7/14/38"

Black and white photograph of unidentified men positioning aircraft.