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- Two Helicopters Aloft, circa 1940 - More than 30 years passed between the invention of the airplane and the advent of a practical helicopter. Once it was perfected, though, the helicopter was adopted quickly. Its vertical takeoff and motionless hover abilities lent it to a wide range of applications including traffic control, search and rescue efforts, emergency medical transport, and military operations.
- circa 1940
- Collections - Artifact
Two Helicopters Aloft, circa 1940
More than 30 years passed between the invention of the airplane and the advent of a practical helicopter. Once it was perfected, though, the helicopter was adopted quickly. Its vertical takeoff and motionless hover abilities lent it to a wide range of applications including traffic control, search and rescue efforts, emergency medical transport, and military operations.
- Helicopter Flying over 3-Level Highway, Greyhound Bus on Each Level, circa 1940 - More than 30 years passed between the invention of the airplane and the advent of a practical helicopter. Once it was perfected, though, the helicopter was adopted quickly. Its vertical takeoff and motionless hover abilities lent it to a wide range of applications including traffic control, search and rescue efforts, emergency medical transport, and military operations.
- circa 1940
- Collections - Artifact
Helicopter Flying over 3-Level Highway, Greyhound Bus on Each Level, circa 1940
More than 30 years passed between the invention of the airplane and the advent of a practical helicopter. Once it was perfected, though, the helicopter was adopted quickly. Its vertical takeoff and motionless hover abilities lent it to a wide range of applications including traffic control, search and rescue efforts, emergency medical transport, and military operations.
- Helicopter Flying over 3-Level Highway, circa 1940 - Highway improvements helped wartime workers travel between downtown Detroit and Ford Motor Company's Willow Run bomber plant. The tri-level interchange seen here provided direct access to the factory from the Willow Run Expressway, opened in September 1942. The Willow Run Expressway also connected with the Detroit Industrial Expressway, built at the same time. These highways later evolved into Interstate 94.
- circa 1940
- Collections - Artifact
Helicopter Flying over 3-Level Highway, circa 1940
Highway improvements helped wartime workers travel between downtown Detroit and Ford Motor Company's Willow Run bomber plant. The tri-level interchange seen here provided direct access to the factory from the Willow Run Expressway, opened in September 1942. The Willow Run Expressway also connected with the Detroit Industrial Expressway, built at the same time. These highways later evolved into Interstate 94.