The Old Mill is a historic windmill located at 50 Prospect Street in Nantucket, Massachusetts. Built in 1746, it is the oldest functioning mill in the United States. The mill is owned and operated by the Nantucket Historical Association as a museum.It is a contributing property of the Nantucket Historic District. In 1992, it was also designated as a Historic Mechanical Engineering Landmark by the American Society of Mechanical Engineers.—Wikipedia, 2026

This landscape view of this smock type windmill is uncredited, although H.S. Wyer was known to have taken many views of the windmill around the time this photograph was published.  Additional history of the Old Mill can be found here.