- Archival materials (16)
- Collection descriptions (16)
- Photographs (10)
- Scrapbooks (8)
- Correspondence (6)
- Clippings (3)
- Ephemera (3)
- Publications (2)
- Articles (1)
- Audiotapes (1)
- Certificates (1)
- Diaries (1)
- Logs (records) (1)
- Manuscripts (1)
- Negatives (1)
- Newspaper clippings (1)
- Photograph albums (1)
- Programs (1)
- Aeronautics (15)
- Aeronautics, Military (11)
- Aeronautics, Commercial (3)
- Airplanes (3)
- Curtiss JN-4 Jenny Family (2)
- Periodicals (2)
- Aerial photography (1)
- Aerial reconnaissance (1)
- Aeronautical engineers (1)
- Air mail service (1)
- Aircraft accidents (1)
- Albatros D.Va (L24) (1)
- Caproni Ca.3 (1)
- Dayton Wright DH-4 (1)
- Fighter pilots (1)
- Flight training (1)
- Photographic reconnaissance systems (1)
- Photographs (1)
- Prisoners of war (1)
- Works of art (1)
- World War, 1939-1945 (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.