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    "Eales Brothers Shingle Mill, June 2, 1907. Built June 1895. Besser Stave Mill and Cleveland Stave Mill and Alpena Excelsior Co. in Background"

    Located at the mouth of the Thunder Bay River.

    Alpena Power Company's Norway Point Dam (aka Seven Mile Dam) across the Thunder Bay River in Alpena County, Michigan during late construction. Built 1923-1924 as an electrical plant and to control Sp

    Collapse of the Ninth Street Bridge across the Thunder Bay River during the flood of April 1923. Alpena County, Michigan.

    Aerial view from Potter Hill Farm (center lower left) to Four Mile Dam (upper left) along the Thunder Bay River and Long Rapids Road, Alpena County, Michigan

    Richardson Dam, originally Oldfield Dam, across the Thunder Bay River near Tenth Street, Alpena, Michigan.

    Trelfa Photograph

    From Centennial History of Alpena County, Michigan (1892/1903) by David D. Oliver, page 31: "The Trowbridge dam slacks the water up the river a short distance above the North Branch, and the perpendi

    From Centennial History of Alpena County, Michigan (1892/1903) by David D. Oliver, page 31: "The Trowbridge dam slacks the water up the river a short distance above the North Branch, and the perpendi

    Trelfa number 2-478-1