- Aeronautics (11)
- Aeronautics, Commercial (4)
- Balloons (3)
- Periodicals (3)
- Airplanes (2)
- Kites (2)
- World War, 1914-1918 (2)
- Aerial photography (1)
- Air pilots (1)
- Airlines (1)
- Airports (1)
- Albatros Aircraft Family (1)
- Breguet Aircraft Family (1)
- Bristol Aircraft Family (1)
- Fokker Aircraft Family (1)
- Gliders (1)
- Gliding and soaring (1)
- Goodyear Pony Blimp (Airship) (1)
- Goodyear Wingfoot Express (Airship) (1)
- Naval aviation (1)
- Nieuport Aircraft Family (1)
- R 34 (British Rigid Airship) (1)
- Research aircraft (1)
- Roma (Italian SCA T.34) (Airship) (1)
- SPAD Aircraft Family (1)
- Seaplanes (1)
- Sopwith Aircraft Family (1)
- U.S. Signal Corps SC-1 free balloon (1)
- United States Navy TC-14 (Airship) (1)
- Women air pilots (1)
- Works of art (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.