DH-4 on Ground 

CH-47A Chinook Helicopter Transports Damaged Huey 

CH-47A Chinook Helicopter in Vietnam 

Conceptual Tilt Wing Aircraft 

First Official Flight of an Armed CH-47A Helicopter at Boeing Vertol Flight Center, Philadelphia, PA 

CH-47A Chinook Helicopter in Army Air Mobility Training Exercise 

US Navy CH-46A Sea Knight Helicopter Transferring Supplies 

Bell XV-15 Hovering Demo near the World Trade Center, New York City 

Military Officers Disembark from H-21B Shawnee Helicopter 

CH-46 Sea Knight Helicopter Transporting Jeep 

CH-47A Chinook Transports T-33 Jet Trainer 

Vertol 107 Prototype for the CH-46 Sea Knight in US Army Livery With 707 

US Army HC-1B Chinook, Later Known as the CH-47 

HC-1B (CH-47) Chinook is Loaded into a C-133A Cargomaster Transport Aircraft 

HC-1B (CH-47) Chinook on Tarmac With C-133A Cargomaster Transport Aircraft 

Vertol VZ-2 (Model 76) Experimental Tilt Wing Aircraft 

US Army HC-1B Chinook, Later Known as the CH-47 

CH-47A Chinook Helicopter Loads a XM-571 APC at Fort Bragg, NC 

Boeing Vertol 107 Flying Over Manhattan Skyline 

Royal Canadian Air Force CH-113, an Export Version of the Boeing Vertol 107(CH-46), Demonstrating its Ablility to Float 

U.S. Marine CH-46A Sea Knight Helicopters in Winter Training Excercises 

U.S. Marine CH-46A Sea Knight in Flight 

CH-46A Sea Knight Landing on Aircraft Carrier 

CH-47A Chinook Helicopter with Pershing Missile 

US Marine Corps Pitcairn Autogyro in Flight, circa 1932