- Aeronautics (6)
- Astronautics (4)
- World War, 1939-1945 (3)
- Aeronautics, Military (2)
- Astronomy (2)
- Women scientists (2)
- World War, 1914-1918 (2)
- Aerial photography (1)
- Aerial spraying and dusting in agriculture (1)
- Air Tractor AT-400 (1)
- Air Tractor AT-602 (1)
- Airplanes (1)
- Albatros D.Va (L24) (1)
- Amusement parks (1)
- Amusement rides (1)
- Atomic bomb (1)
- Ayres Corp 660 Turbo-Thrush (1)
- Ayres Corp Turbo-Thrush S2R (1)
- Bell Aircraft Family (1)
- Bell UH-1B (HU-1B) Iroquois (Huey) (1)
- Boeing B-29 Superfortress (1)
- Cessna 340 (1)
- Douglas C-47 Skytrain Family (1)
- Hughes 269 Family (1)
- Lockheed P-38 Lightning Family (1)
- Martin B-26B Marauder (Model 179B) "Flak Bait" (1)
- Navigation (1)
- Navigation (Aeronautics) (1)
- Navigation (Astronautics) (1)
- Piper PA-25 Pawnee Family (1)
- Space Shuttles, Columbia (OV-102) (1)
- Space flight (1)
- Space shuttles (1)
- Space suits (1)
- Time (1)
- Women air pilots (1)
Our collections specialists actively work on the conservation, preservation, restoration, and long-term care of the objects in our collection. From full-scale restoration projects to applying preservation techniques and doing regular assessments, these activities form a crucial part of our stewardship of the National Collection.