- Archival materials (50)
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- Airplanes (13)
- Air pilots (12)
- Periodicals (11)
- World War, 1939-1945 (10)
- World War, 1914-1918 (7)
- Flight training (6)
- Aircraft industry (5)
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- Airlines (3)
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- Curtiss-Wright aircraft (1)
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- Edo Model B Flying Boat "Malolo" (1)
- Flight attendants (1)
- Fokker F.27 Friendship Family (1)
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- Gliders (Aeronautics) (1)
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- Martin B-26 Marauder Family (1)
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- North American XB-70A (RS-70) Valkyrie (1)
- North American XB-70A (RS-70) Valkyrie Wind Tunnel Model (1)
- Photographic reconnaissance systems (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.