- Aeronautics (9)
- Aeronautics, Commercial (6)
- Aeronautics, Military (6)
- Air mail service (3)
- Periodicals (3)
- Aeronautical engineers (2)
- Air pilots (2)
- Balloons (2)
- World War, 1939-1945 (2)
- Aeroanutics (1)
- Air defenses (1)
- Aircraft industry (1)
- Airplanes (1)
- Airports (1)
- Ballistic missiles (1)
- Flight training (1)
- Helicopter transportation (1)
- Helicopters (1)
- Midway, Battle of, 1942 (1)
- Naval aviation (1)
- Parachutes (1)
- Rockets (Aeronautics) (1)
- Rockets (Ordnance) (1)
- Smith (John W.) 1911 Monoplane (1)
- Smith (John W.) 1913 Monoplane (1)
- Women and the military (1)
- Women in aeronautics (1)
- World War, 1914-1918 (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.