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Archeological Site No. 39.1 is a prehistoric archaeological site in Searsmont, Maine. Located on the floodplain of a waterway, it is one of the state's largest Paleo-Indian habitation sites, estimated by the surveying archaeologists to be about 18,000 square metres (4.4 acres). The unstratified (single-layer) site is expected to contribute significantly to what is known about prehistoric human habitation patterns in the area, and was listed on the National Register of Historic Places in 1994 for this reason.