- Archival materials (19)
- Collection descriptions (19)
- Photographs (15)
- Correspondence (12)
- Manuscripts (6)
- Reports (5)
- Drawings (4)
- Maps (2)
- Programs (2)
- Scrapbooks (2)
- Articles (1)
- Audiotapes (1)
- Awards (1)
- Black-and-white negatives (1)
- Brochures (1)
- Diaries (1)
- Ephemera (1)
- Financial records (1)
- Logs (records) (1)
- Motion pictures (visual works) (1)
- Negatives (1)
- Notebooks (1)
- Notes (1)
- Postcards (1)
- Posters (1)
- Press releases (1)
- Questionnaires (1)
- Timetables (1)
- Aeronautics (17)
- Aeronautics, Military (10)
- Aeronautics, Commercial (8)
- Periodicals (4)
- Airplanes (3)
- World War, 1939-1945 (3)
- Air mail service (2)
- Air pilots (2)
- Aircraft industry (2)
- Astronautics (2)
- Astronautics and state (2)
- Balloons (2)
- Rockets (Aeronautics) (2)
- World War, 1914-1918 (2)
- Aerial photography (1)
- Aerial reconnaissance (1)
- Aeroanutics (1)
- Aeronautical engineers (1)
- Air defenses (1)
- Airplanes, Military (1)
- Airports (1)
- Airships (1)
- Autogiros (1)
- Ballistic missiles (1)
- Conduct of life (1)
- Economics (1)
- Flight training (1)
- Gliders (Aeronautics) (1)
- Gliding and soaring (1)
- Heinkel He 178 (1)
- Heinkel He S3B Turbojet (engine) (1)
- Heinkel He S8 (109-011) Turbojet (engine) (1)
- Helicopter transportation (1)
- Helicopters (1)
- Herrick Vertaplane Family (1)
- Herrick rotary engine (1)
- Jet propulsion (1)
- Journalism, Aeronautical (1)
- Langley Aerodrome Family (1)
- Launch complexes (Astronautics) (1)
- Lawson (Alfred) C-2 Airliner (1)
- Manned space flight (1)
- Midway, Battle of, 1942 (1)
- Naval aviation (1)
- Photogrammetrists (1)
- Photogrammetry (1)
- Remote sensing (1)
- Rocketry (1)
- Rockets (Ordnance) (1)
- Space flight (1)
- Test pilots (1)
- United States Navy TC-14 (Airship) (1)
- V-2 rocket (1)
- Women in aeronautics (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.