Borns, H.W. Jr., Doner, L.A., Dorion, C.C., Jacobson, G.L. Jr., Kaplan, M.R., Kreutz, K.J., Lowell, T.V., Thompson, W.B. Weddle, T.K., 2004. The deglaciation of Maine, U.S.A.. Quaternary Glaciations – Extent and Chronology Part II: North America 89-109.