Supplement No. 6, 1907, corrections and additions to Bulletin No. 17 to supplement information given upon charts of Great Lakes, and issued with those charts from Office U.S. Lake Survey, Detroit, Mich. : Lake Superior, St. Marys River; Lake Michigan and Green Bay; Lake Huron, St. Clair River, Lake St. Clair, Detroit River; Lake Erie, Niagara River; Lake Ontario, St. Lawrence River

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United States. War Department

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