Washburn A Mill was one of twenty-six Minneapolis flour mills that lined the Mississippi River below St. Anthony Falls during the city’s industrial heyday. By the early 1900s, its company (Washburn-Crosby) was the leading flour miller in Minnesota. The historic building has had five reincarnations in its more than 150 years: an original mill (1874–1878); a rebuilt second mill (1880–1924); a renovated mill (1924–1965); a warehouse (1965–1990); and a museum operated by the Minnesota Historical Society (2003–present).