Areal geology, New York - Ontario, Niagara Gorge
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U.S. Geological Survey
Abstract
Historical map showing geological, road, transportation and hydrological features, buildings.Digital reproduction of map (118 x 44 cm.) in the Public Archives of Canada. National Map Collection. Library and Archives Canada.Relief shown by contours and spot heightsGeoreferenced and modified by Map, Data and GIS Library, Brock University.