- Aeronautics (5)
- Aeronautics, Military (3)
- Aeronautics, Commercial (2)
- Airplanes, Military (2)
- Curtiss, General, Aircraft (2)
- Aeronautical instruments (1)
- Aerospace engineering (1)
- Airplanes, Home-built (1)
- Beech Aircraft Family (1)
- Bell Aircraft Family (1)
- Consolidated Aircraft Family (1)
- Curtiss V-1570 (V-1550) Conqueror (1)
- Douglas Aircraft Family (1)
- General Motors (Eastern) Aircraft Family (1)
- Goodyear Aircraft Family (1)
- Grumman Aircraft Family (1)
- Lockheed Aircraft Family (1)
- Martin Aircraft Family (1)
- McDonnell Aircraft Family (1)
- Naval Aircraft Factory Aircraft Family (1)
- Naval aviation (1)
- North American Aircraft Family (1)
- Rutan Model 33 Vari-Eze (1)
- Vought Aircraft Family (1)
- World War, 1939-1945 (1)
- Wright Cyclone 18 (R-3350) 18-cyl radial engine family (1)
- Wright Cyclone F 9-Cyl Radial (1)
- Wright Cyclone F-50 9-Cyl Radial (1)
- Wright Cyclone G 9-Cyl Radial (1)
- Wright Whirlwind (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.