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Closeup of polished wood with various textures.

B.L. Marble Chair Co. Propeller

A top and bottom comparison. On the top is the middle of a wooden propeller with some flaking. On the bottom, it is refinished.

B.L. Marble Chair Co. Propeller

A wooden propeller is photographed against an all black backdrop.

B.L. Marble Chair Co. Propeller

A large aircraft on a runway where a taxiway sign is visible.

Taxiway Intersection Sign

Two individuals drilling a pavement.

Drilling Core Samples

A device is on top of oil on a pavement.

Aircraft Oil on Pavement

A truck sweeps on a runway.

Sweeper Truck

Closeup of a large aircraft as it taxis on a runway.

C-5 Taxiing

Leon leaning on the propeller of the San Fernando school’s Standard J-1 in 1920.

Standard J-1 in 1920

Curtiss’ San Fernando airfield in the early 1920s with a JN-4 “Jenny” in the foreground.

Curtiss’ San Fernando Airfield - JN-4 “Jenny”

Leon (left) and an unidentified woman chat after a flight, undated.

Lawrence Leon

Black and white image of map of airship routes across the North Atlantic.

Map of Airship Routes

An image of a congressional bill related to the conservation, exploitation, production, and sale of helium gas.

HR 10548 Bill

A cover page for a report on helium activity dated 1968.

Report Cover - Helium Activity

On the side of a bomber, the name "Flak-Bait" is painted, as well as an icon of a bomb with the number 200 on it and the name "O.J. Red Redmond."

Flak-Bait Nose Art (Uploaded 2023)

White spacesuit with blue and red ports on the front of it.

Jim Irwin Spacesuit