Kehew AE, B. Curry B, Kozlowski AL, Bird BC, Lowell TV, Smith CA, Feranec RS, Graham BLars.  2018.  Quaternary Glaciation of the Great Lakes Region: Process, Landforms, Sediments, and ChronologyMinimum age of the Mapleton, Tully, and Labrador Hollow moraines indicates correlation with the Port Huron Phase in central New York State.