- Archival materials (9)
- Collection descriptions (9)
- Correspondence (5)
- Financial records (4)
- Photographs (4)
- Publications (4)
- Newsletters (3)
- Drawings (2)
- Motion pictures (visual works) (2)
- Newspapers (2)
- Articles (1)
- Audiocassettes (1)
- Cartoons (humorous images) (1)
- Clippings (1)
- Ephemera (1)
- Manuals (1)
- Manuscripts (1)
- Maps (1)
- Notes (1)
- Press releases (1)
- Speeches (1)
- Timetables (1)
- Transcripts (1)
- Video recordings (1)
- Aeronautics (7)
- Airlines (5)
- Aeronautics, Military (3)
- Air travel (2)
- Periodicals (2)
- Air mail service (1)
- Airports (1)
- Boeing 727 Family (1)
- Boeing 747SP (747-100SP) (1)
- Curtiss, General, Aircraft (1)
- Curtiss-Wright aircraft (1)
- Douglas DC-9 Family (1)
- Flight attendants (1)
- Helicopter transportation (1)
- Helicopters (1)
- Local service airlines (1)
- Waco Aircraft Family (1)
- Women air pilots (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.