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A four-blade mock turbine windmill, belonging to Friederich Ernstmeyer, seen near Grand Island, Nebraska in 1898, used to pump water for livestock. The eight-foot-diameter rotor is attached to the frame of an old mower that was mounted atop a tower of four cottonwood logs with the bark still on. Because the project used mostly found and unused parts, its total cost was 32 cents, which was the price of a long plank used for the rotor blades. (Photo by U.S. National Archives)
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