- Archival materials (4)
- Collection descriptions (4)
- Clippings (2)
- Photographs (2)
- Biographies (1)
- Certificates (1)
- Drawings (1)
- Financial records (1)
- Logs (records) (1)
- Motion pictures (visual works) (1)
- Newspaper clippings (1)
- Photographic prints (1)
- Reports (1)
- Scrapbooks (1)
- Stock certificates (1)
- Aeronautics (4)
- Aeronautics, Commercial (1)
- Aeronautics, Military (1)
- Air pilots (1)
- Bellanca WB-2 "Miss Columbia" (1)
- Curtiss NC-1 (P2N-1) (1)
- Curtiss NC-4 (P2N-1) (1)
- Curtiss NC-Boat Family (1)
- Junkers W 33 Family (1)
- Junkers W 33b "Bremen" (1)
- Klemm L-20 "Yankee Doodle" (1)
- Seaplanes (1)
- USA, Petersen's American Aerial Navigation Co (1)
- World War, 1914-1918 (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.