- Archival materials (6)
- Collection descriptions (6)
- Photographs (5)
- Correspondence (3)
- Clippings (2)
- Newspaper clippings (2)
- Notes (2)
- Press releases (2)
- Articles (1)
- Audiotapes (1)
- Color slides (1)
- Financial records (1)
- Manuscripts (1)
- Motion pictures (visual works) (1)
- Philately (1)
- Photographic prints (1)
- Publications (1)
- Aeronautics (4)
- Astronautics (2)
- Balloons, Sounding (2)
- Rockets (Aeronautics) (2)
- Rockets, Sounding (2)
- Stratolab Program (2)
- Stratoscope II (2)
- Vertically rising aircraft (2)
- Aeronautics, Military (1)
- Air defenses (1)
- Atmosphere, Upper (1)
- Infrared spectroscopy (1)
- Infrared telescopes (1)
- Kinetic art (1)
- Parachuting (1)
- Project Vanguard (1)
- Rocketry (1)
- Strato-Jump Program (1)
- Stratoscope I (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.