Description provided with image: "Temporary customs operation set up at Hughes Executive Terminal in Las Vegas In San Francisco by Scandinavian Airlines to process foreign passengers from 128 countries, here to attend the American Mining Congress. Las Vegas was designated an International Port of Entry in 1972.

The HK-1, Hughes Flying Boat (with the number NX37602 on tail visible) in the water on Terminal Island in the Los Angeles Harbor.

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."

The up close view of Howard Hughes being escorted through a crowd of people at Floyd Bennett Airfield in New York. Description printed on photograph's accompanying sheet of paper: "Escorted through crowd- 7/14/38 (Daily News)"

The up close view of Howard Hughes being escorted through a crowd of people at Floyd Bennett Airfield in New York. Description printed on photograph's accompanying sheet of paper: "Escorted through crowd- 7/14/38 (Daily News)"

Hughes' plane landing after historic flight. Inscription with image reads: "Hughes Racer landing at Newark Airport after breaking coast-to-coast record 27 sec. - distance 2490 mi. - average speed 332 mph. (This bettered his previous record by 2 hours.) Newark, New Jersey."

Interior of the Hughes Tool Company, at Second and Girard Streets in Houston, Texas. Shown is the lab where the trench mining drill was developed.