31 maps : b&w ; on sheets 62 x 41 cm. Scale varies or not given. Title from a letter accompanying the charts. Two letters (from the Captain of Engineers, USA) accompany the charts, one dated January 18, 1892, the other March 10, 1892. "November, 1891. Photolithographed from original charts by permission of the U.S. State Department." Maps are based on survey ordered by the commissioners under the 6th and 7th articles of the Treaty of Ghent, and are dated 1817-1842. Iroquois or St. Lawrence (9 sheets) -- Lake Ontario (1 sheet) -- Ontario (1 sheet) -- Niagara (4 sheets) -- Lake Erie (2 sheets) -- Detroit (3 sheets) -- Lake St. Clair (3 sheets) -- Lake Huron (2 sheets) -- River Sainte Marie (2 sheets) -- Lake Superior (2 sheets).