- Archival materials (4)
- Collection descriptions (4)
- Correspondence (3)
- Articles (2)
- Audiotapes (2)
- Photographs (2)
- Audiocassettes (1)
- Clippings (1)
- Contracts (1)
- Illustrations (1)
- Invoices (1)
- Newsletters (1)
- Newspaper clippings (1)
- Newspapers (1)
- Papers, technical (1)
- Photographic prints (1)
- Publications (1)
- Reports (1)
- Scrapbooks (1)
- Sketches (1)
- Technical drawings (1)
- Transcripts (1)
- Vhs (videotape format) (1)
- Videotapes (1)
- Aeronautics (3)
- Aeronautics, Commercial (2)
- Aeronautics, Military (1)
- Air travel (1)
- Airlines (1)
- Centaur Rocket (1)
- Flight attendants (1)
- Interplanetary voyages (1)
- Launch vehicles (Astronautics) (1)
- Rocket engines (1)
- Serrell Helicopter (1861) (1)
- Space colonies (1)
- Space industrialization (1)
- Space scientists (1)
- Space stations (1)
- Steam-engines (1)
- V-2 rocket (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.