- Aeronautics (1)
- Air mail service (1)
- Bach 3CT8 (Air Yacht) (1)
- Boeing B-17 Flying Fortress Family (1)
- Boeing-Vertol CH-113 Voyageur (1)
- Brunner Winkle Bird (1)
- Consolidated B-24 Liberator (1)
- Curtiss JN-4 Jenny (1)
- Dornier Do 17 Family (1)
- Douglas A-20 Havoc Family (1)
- Fokker D.III (M 19F, M 19K) (1)
- Great Lakes 4A-1 (1)
- Heinkel He 111 Family (1)
- Junkers-Larsen JL-6 (1)
- Martin B-26 Marauder Family (1)
- Martin MP Mailplane (1)
- Northrop P-61A Black Widow (1)
- Piasecki H-21 (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.