- Archival materials (96)
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- Aeronautics (81)
- World War, 1939-1945 (27)
- Aeronautics, Commercial (26)
- Air pilots (19)
- World War, 1914-1918 (17)
- Airplanes (12)
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- Boeing B-29 Superfortress (6)
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- Korean War, 1950-1953 (4)
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- Bases and Installations, Hawaii, Hickam (2)
- Bell P-59 Airacomet Series (2)
- Boeing B-52 Stratofortress Family (Model 464) (2)
- Curtiss JN-4D Jenny (2)
- Douglas C-54 Skymaster Family (2)
- Endurance flights (2)
- Helicopters (2)
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- Langley Aerodrome A, Curtiss 1914 Rebuild (2)
- Lockheed P-38 Lightning Family (2)
- Military records (2)
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- Naval aviation (2)
- North American F-86 Sabre Family (2)
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- Republic P-47 (F-47) Thunderbolt Family (2)
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- SPAD XIII (S.13) (2)
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- Aerial Experiment Assoc Aerodrome No 3 June Bug (1)
- Aerial Experiment Assoc Aerodrome No 4 Silver Dart (1)
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- Consolidated B-24 Liberator Family (1)
- Consolidated F-7A Liberator (1)
- Courts-martial and courts of inquiry (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.