 The Foxcroft Mill is located on the west side of the Piscataquis River, which flows through downtown Dover-Foxcroft.The buildings were built between 1844 and 1941, and have been listed on the National Register of Historic Places.The mill site has an industrial history dating to 1822, although the oldest surviving element of it, a foundation, dates to the 1844 mill built by James Mayo and several partners.