- Archival materials (23)
- Collection descriptions (23)
- Photographs (11)
- Correspondence (9)
- Publications (6)
- Financial records (4)
- Clippings (3)
- Newsletters (3)
- Newspapers (3)
- Articles (2)
- Drawings (2)
- Manuscripts (2)
- Motion pictures (visual works) (2)
- Press releases (2)
- Technical drawings (2)
- Transcripts (2)
- Audiocassettes (1)
- Biographies (1)
- Calendars (1)
- Cartoons (humorous images) (1)
- Color transparencies (1)
- Commercial correspondence (1)
- Diaries (1)
- Ephemera (1)
- Logs (records) (1)
- Manuals (1)
- Maps (1)
- Memorandums (1)
- Mini-dv (1)
- Motion pictures (1)
- Notebooks (1)
- Notes (1)
- Patents (1)
- Receipts (1)
- Resumes (1)
- Rosters (1)
- Scrapbooks (1)
- Slides (photographs) (1)
- Speeches (1)
- Technical manuals (1)
- Timetables (1)
- Video recordings (1)
- Aeronautics (15)
- Aeronautics, Commercial (9)
- Aeronautics, Military (7)
- Airlines (5)
- Astronautics (5)
- Manned space flight (3)
- Periodicals (3)
- World War, 1939-1945 (3)
- Air pilots (2)
- Air travel (2)
- Space Shuttle Program (U.S.) (2)
- Space sciences (2)
- Women air pilots (2)
- World War, 1914-1918 (2)
- Aerodynamics (1)
- Air defenses (1)
- Air mail service (1)
- Airplanes (1)
- Airports (1)
- Apollo 11 Flight (1)
- Apollo 12 Flight (1)
- Apollo 14 Flight (1)
- Apollo 15 Flight (1)
- Apollo 16 Flight (1)
- Apollo 17 Flight (1)
- Astronomy (1)
- Balloons (1)
- Boeing 727 Family (1)
- Boeing 747SP (747-100SP) (1)
- Bombs (1)
- Color photography (1)
- Curtiss NC-1 (P2N-1) (1)
- Curtiss NC-4 (P2N-1) (1)
- Curtiss NC-Boat Family (1)
- Curtiss, General, Aircraft (1)
- Curtiss-Wright aircraft (1)
- Douglas DC-9 Family (1)
- Endurance flights (1)
- Enemy property (1)
- Flight attendants (1)
- Helicopter transportation (1)
- Helicopters (1)
- Hubble (Large) Space Telescope (1)
- Local service airlines (1)
- Military intelligence (1)
- Oceanography (1)
- Seaplanes (1)
- Space Shuttles, Columbia (OV-102) (1)
- Space flight (1)
- Space suits (1)
- Telescopes (1)
- Transatlantic flights (1)
- Waco Aircraft Family (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.