A view of the first passenger plane equipped with radar that Howard Hughes is flying in Culver City, California.

Typed onto a piece of paper attached to the image: "Hughes, Companions Welcomed at City Hall, New York City - In the greatest since Lindbergh's, Howard Hughes and his four gallant companions paraded up Broadway July 15 almost smothered by the accolade of ticker tape which fluttered down upon them from the skyscrapers. This picture was taken as the five record-smashing, Round-The-World fliers posed for photographers in front of City Hall. Credit Line (ACME) 7-15-38."

Howard Hughes in the cockpit of his XF-11 airplane before his first test flight.

A view of Howard Hughes installing a radar safety system for passenger planes in Culver City, California.

A view of Howard Hughes installing a radar safety system for passenger planes in Culver City, California.

Typed onto a piece of paper attached to the image: "Hughes, Companions Hailed at N.Y. City Hall, New York City -- As thousands of New Yorkers cheered until hoarse, Howard Hughes and his four companions on his record-smashing, globe-girdling flight are shown as they arrived at City Hall July 15 for an official welcome and congratulation. It was the greatest reception New York had unloosed since Lindbergh's eleven years ago. 7/15/38 Credit Line (ACME)."

A view of Howard Hughes attending an informal press conference in Culver City, California, after Hughes left the Senate War Investigating Subcommittee hearing in Washington.