Sketch showing the primary triangulation, together with the divide between the streams flowing to the Hudson and St. Lawrence Rivers Map of the Adirondack survey, 1872, by Verplanck Colvin, Sketch showing the primary triangulation Adirondack survey, 1872, by Verplanck Colvin Argus Company (Albany, ). Cartographic. Maps, Surveys. 1872. Lionel Pincus and Princess Firyal Map Division. Triangulation , New York (State) , Adirondack Mountains (), Rivers , New York (State), Adirondack Mountains (), Hudson River ( and ), Saint Lawrence River

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