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Welcome to Mid-America Windmill Museum.
http://www.midamericawindmillmuseum.com/
Preserving the history of American-style water pumping windmills and related machinery with equipment and displays from the 1860s to the present.
http://www.windmill.com/
Dedicated to the preservation and history of windmill use in the Americas.
http://www.VintageWindmills.Com/
Wide ranging look at all sorts of windmills throughout the world, but with particular emphasis on the U.K. Illustrated with many photos.
http://www.windmillworld.com/