- Air pilots (10)
- World War, 1914-1918 (9)
- Aeronautics, Commercial (4)
- Flight training (3)
- Periodicals (3)
- Aircraft industry (2)
- Curtiss JN-4 Jenny Family (2)
- World War, 1939-1945 (2)
- Aerial photography (1)
- Aerial reconnaissance (1)
- Airlines (1)
- Airplanes (1)
- Airships (1)
- Albatros D.Va (L24) (1)
- Alexander Eaglerock Aircraft Family (1)
- Balloons (1)
- Bell XFM-1 Airacuda (1)
- Bellanca WB-2 "Miss Columbia" (1)
- Burgess Aircraft Family (1)
- Burgess-Wright Aircraft Family (1)
- Caproni Ca.3 (1)
- Cessna Aircraft Company (1)
- Curtiss Model H "America" (H-1) (1)
- Curtiss NC-1 (P2N-1) (1)
- Curtiss NC-4 (P2N-1) (1)
- Curtiss NC-Boat Family (1)
- Curtiss P-36 Hawk Family (1)
- Dayton Wright DH-4 (1)
- Dorand A.R. (Avion de Reconnaissance) Series (1)
- Douglas World Cruiser (DWC) (1)
- Endurance flights (1)
- Flights around the world (1)
- Gliding and soaring (1)
- Kites (1)
- Korean War, 1950-1953 (1)
- Langley Aerodrome A, Curtiss 1914 Rebuild (1)
- Lockheed P-38 Lightning Family (1)
- National Aeronautical Association (U.S.) (1)
- Nieuport (France) 28 (1)
- North American F-86 Sabre Family (1)
- Photographic reconnaissance systems (1)
- SPAD XIII (S.13) (1)
- Seaplanes (1)
- Technical manuals (1)
- Transatlantic flights (1)
- Works of art (1)
- de Havilland (Airco) D.H.4 (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.