Source: Map of Piscataquis County, Maine / from surveys under the direction of H.F. Walling ; field notes under the direction of L.H. Eaton, Esq., civil engineer ; engraved, printed, colored & mounted at H.F. Walling's map establishment. New York: Published by Lee & Marsh, 1858. Library of Congress, Geography and Map Division. [Digital ID: g3733p la000273]