March 13, 2025
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Dymaxion House in Wichita, Kansas
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This view shows the interior of one of the tunnels through which the Colorado River will be diverted around the Hoover Dam site in Boulder City, Nev., April 18, 1932. The project is in the early stages of construction. (AP Photo)
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More than 700 feet over the Colorado River bed, workers put the finishing touches on the Hoover Dam on Aug. 12, 1931. The dam was built by the Bureau of Reclamation, Department of the Interior. (AP Photo)
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Cape Lookout Lighthouse, Harkers Island, North Carolina