- Works of art (20)
- Archival materials (5)
- Collection descriptions (5)
- Correspondence (4)
- Financial records (4)
- Motion pictures (visual works) (3)
- Publications (3)
- Photographs (2)
- Videotapes (2)
- Black-and-white negatives (1)
- Clippings (1)
- Diaries (1)
- Manuscripts (1)
- Negatives (1)
- Newspaper clippings (1)
- Photographic prints (1)
- Reports (1)
- Art (20)
- Aeronautics (5)
- Aeronautics, Commercial (3)
- Aeronautics, Military (2)
- Periodicals (2)
- Aerial photography (1)
- Aircraft industry (1)
- Autogiros (1)
- Bellanca WB-2 "Miss Columbia" (1)
- Curtiss, General, Aircraft (1)
- Curtiss-Wright aircraft (1)
- Fighter pilots (1)
- Herrick Vertaplane Family (1)
- Herrick rotary engine (1)
- Transatlantic flights (1)
- Works of art (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.