- Archival materials (31)
- Correspondence (27)
- Publications (23)
- Scrapbooks (12)
- Diaries (8)
- Drawings (7)
- Manuscripts (7)
- Financial records (6)
- Maps (5)
- Reports (3)
- Clippings (2)
- Ephemera (2)
- Logs (records) (2)
- Telegrams (2)
- Videotapes (2)
- Audiotapes (1)
- Business cards (1)
- Certificates (1)
- Glass negatives (1)
- Lantern slides (1)
- Memoirs (1)
- Motion pictures (visual works) (1)
- Negatives (1)
- Newsletters (1)
- Notebooks (1)
- Press releases (1)
- Timetables (1)
- Aeronautics, Military (11)
- Aeronautics, Commercial (10)
- Air pilots (6)
- World War, 1914-1918 (6)
- Gliding and soaring (4)
- Women in aeronautics (4)
- Works of art (4)
- Aeronautical engineers (3)
- Aerial reconnaissance (2)
- Air mail service (2)
- Aircraft industry (2)
- Airships (2)
- Flight training (2)
- Photographic reconnaissance systems (2)
- Aerial photography (1)
- Aeronautics and state (1)
- Air travel (1)
- Airlines (1)
- Airplane racing (1)
- Airports (1)
- Ambulances (1)
- Apollo Project (1)
- Avionics (1)
- Balloons (1)
- Boeing 727 Family (1)
- Boeing 747SP (747-100SP) (1)
- Burgess Aircraft Family (1)
- Cold War (1)
- Douglas DC-9 Family (1)
- Electricity in aeronautics (1)
- Fighter pilots (1)
- Gemini Project (1)
- Harmon International Trophy (1)
- Helicopter transportation (1)
- Helicopters (1)
- Kites (1)
- Langley Aerodrome Family (1)
- Langley Aerodrome No 5 (1895-96) (1)
- Local service airlines (1)
- Lockheed U-2 Family (1)
- McDonnell F-4 (F4H) Phantom II Family (1)
- Mercury Project (1)
- Military intelligence (1)
- Project Apollo (U.S.) (1)
- Radar air traffic control systems (1)
- Rohrbach Ro III Rotri Flying Boat (1)
- SPAD XIII (S.13) "Smith IV" (1)
- Saturn 5 Launch Vehicle (1)
- Trophies (1)
- United States (1)
- World War, 1939-1945 (1)
- Wright (Co) Model B (1)
- Wright (Co) Model G Aeroboat (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.