Coolidge, Austin J.; John B. Mansfield (1859). A History and Description of New England. Boston, Massachusetts: A.J. Coolidge. pp. 153–154. coolidge mansfield history description new england 1859.
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"History of Harpswell, Maine", from A Gazetteer of the State of Maine, by Geo. J. Varney. Published by B. B. Russell, 57 Cornhill, Boston, 1886 [1]