- Memorabilia (564)
- Aircraft (355)
- Personal equipment (344)
- Awards (325)
- Models (245)
- Equipment (233)
- Propulsion systems (210)
- Rockets (190)
- Components (objects) (155)
- Medals (153)
- Photographic equipment (138)
- Insignias (136)
- Works of art (99)
- Uncrewed spacecraft (93)
- Uniforms (87)
- Scientific instruments (86)
- Crewed spacecraft (81)
- Missiles (70)
- Instruments (60)
- Flight instruments (59)
- Protective and life-saving equipment (59)
- Engines (56)
- Headgear (50)
- Helmets (50)
- Reciprocating (piston) engines (50)
- Rotary engines (50)
- Engines (power producing equipment) (45)
- Costume accessories (44)
- Avionics (42)
- Tools (41)
- Communication systems (mechanical and electrical systems) (40)
- Payloads (35)
- Prints (35)
- Weapons (35)
- Navigational instruments (34)
- Originals (34)
- Culinary equipment for serving and consuming food (31)
- Food (31)
- Rotorcraft (29)
- Trophies (25)
- Testing equipment (23)
- Handwear (22)
- Sights (firearm component) (22)
- Paintings (21)
- Clothing (20)
- Propellers (20)
- Protective wear (20)
- Medical equipment (19)
- Jet aircraft (17)
- Personal equipment: grooming, hygiene and health care (17)
- Turbines (17)
- Computers (16)
- Impellers (16)
- Footwear (14)
- Radar (14)
- Artificial satellites (10)
- Baloons (aircraft) (8)
- Electrical systems (7)
- Spacesuits (7)
- Military uniforms (6)
- Wind tunnels (6)
- Instructional materials (5)
- Parachutes (life-saving equipment) (5)
- Rotocraft (5)
- Sculpture (5)
- Specimens (5)
- Bombs (explosive weapons) (4)
- Containers (4)
- Science fiction (4)
- Autopilots (3)
- Breathing devices (3)
- Personal accessories (3)
- Photographs (3)
- Ammunition (2)
- Maps (2)
- Power producing equipment (2)
- Airships (1)
- Books (1)
- Experimental aircraft (1)
- Kites (equipment) (1)
- Landing equipment (1)
- Meteorological instruments (1)
- Mixed media (1)
- Posters (1)
- Sound recordings (1)
- Underwear (1)
- Popular culture (456)
- Aeronautics (255)
- Outer space (169)
- Photography (139)
- Art (94)
- Airlines (87)
- Science (87)
- Spaceflight (83)
- Navigation (59)
- Human spaceflight (58)
- War (48)
- Moon (26)
- Air traffic control (8)
- Electronic apparatus and appliances (5)
- Extravehicular activity (Human spaceflight) (3)
- Vietnam War, 1961-1975 (2)
- WW I (2)
- World War, 1914-1918 (2)
- Design (1)
- Manufacturing industries (1)
- WW II (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.