An undated photograph of the Williamstown Tunnel, part of the mining operation at Williamstown, Dauphin County, Pennsylvania.
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Photo from the Sesquicentennial History of Williamstown and Williams Township, Dauphin County, Pennsylvania, published in 1976. For availability of copies of this book, contact the Williamstown and Williams Township Historical Society, 115 W. Market Street, Williamstown, Pennsylvania 17098.
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