- Archival materials (9)
- Collection descriptions (9)
- Correspondence (4)
- Drawings (4)
- Photographs (4)
- Publications (4)
- Financial records (3)
- Audiotapes (2)
- Clippings (2)
- Manuscripts (2)
- Reports (2)
- Audiocassettes (1)
- Black-and-white negatives (1)
- Certificates (1)
- Color slides (1)
- Diaries (1)
- Manuals (1)
- Maps (1)
- Negatives (1)
- Newsletters (1)
- Slides (photographs) (1)
- Videotapes (1)
- Aeronautics (9)
- Aeronautics, Military (3)
- Air travel (2)
- Airlines (2)
- Boeing 747 Family (2)
- Periodicals (2)
- Aerial photography (1)
- Aircraft industry (1)
- Autogiros (1)
- Boeing 707 Family (1)
- Boeing 727 Family (1)
- Curtiss, General, Aircraft (1)
- Curtiss-Wright aircraft (1)
- Douglas DC-9 Family (1)
- Douglas DC-9 Super 80 (MD-80) Series (1)
- Flight training (1)
- Grumman Aircraft Family (1)
- Herrick Vertaplane Family (1)
- Herrick rotary engine (1)
- Junkers W 33 Family (1)
- Junkers W 33b "Bremen" (1)
- Klemm L-20 "Yankee Doodle" (1)
- McDonnell Douglas DC-10 Family (1)
- Television advertising (1)
- Test pilots (1)
- Transatlantic flights (1)
- Travel (1)
- Women in aeronautics (1)
- Women test pilots (1)
- World War, 1914-1918 (1)
- advertising (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.