- Aeronautics (3)
- Astronautics (3)
- Astronauts (2)
- Mercury Project (2)
- Aeronautics, Commercial (1)
- Aeronautics, Military (1)
- Air pilots (1)
- Air travel (1)
- Airlines (1)
- Apollo Lunar Module (1)
- Astronomy (1)
- Balloons (1)
- Boeing 727 Family (1)
- Boeing 747SP (747-100SP) (1)
- Dietetics (1)
- Douglas DC-9 Family (1)
- Food (1)
- Kinetic art (1)
- Local service airlines (1)
- Manned space flight (1)
- Periodicals (1)
- Project Apollo (U.S.) (1)
- Space sciences (1)
- Telescopes (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.