- Correspondence (35)
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- Audiocassettes (1)
- Business cards (1)
- Certificates (1)
- Charts (1)
- Christmas cards (1)
- Glass negatives (1)
- Lantern slides (1)
- Logs (records) (1)
- Motion pictures (visual works) (1)
- Negatives (1)
- Newsletters (1)
- Newspapers (1)
- Notebooks (1)
- Notes (1)
- Postcards (1)
- Printed ephemera (1)
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- Slides (photographs) (1)
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- Aeronautics (43)
- Periodicals (25)
- Aeronautics, Commercial (15)
- Aeronautics, Military (14)
- Women in aeronautics (7)
- Aeronautical engineers (5)
- Air pilots (5)
- Works of art (5)
- World War, 1914-1918 (5)
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- Gliding and soaring (4)
- Aerial photography (3)
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- World War, 1939-1945 (3)
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- Aeronautics and state (1)
- African American air pilots (1)
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- Langley Aerodrome No 5 (1895-96) (1)
- Local service airlines (1)
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- Mural painting and decoration (1)
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- Project Apollo (U.S.) (1)
- Radar air traffic control systems (1)
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- Rockets (Aeronautics) (1)
- SPAD XIII (S.13) "Smith IV" (1)
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- Wiseman-Peters #2 Biplane (1)
- Women air pilots (1)
- Wright (Co) Model G Aeroboat (1)
- Zeppelin LZ 127 Graf Zeppelin (1)
- Zeppelin LZ 129 Hindenburg (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.