- Aeronautics (2)
- Aeronautics, Commercial (1)
- Aeronautics, Military (1)
- Airlines (1)
- Astronautics (1)
- Astronomy (1)
- Boeing Model 377 Stratocruiser Family (1)
- Douglas DC-4 (1)
- Douglas DC-7 (1)
- Kites (1)
- Models and modelmaking (1)
- Museums (1)
- North American F-100 Super Sabre (Sabre 45) Family (1)
- Republic F-105 Thunderchief Family (1)
- Space sciences (1)
- Telescopes (1)
- Tourism (1)
- Vietnam War, 1961-1975 (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.