Citation Data
MLA
United States. War Department. Corps of Engineers. Chart of Harbor at Duluth, Minn. and Superior, Wisconsin. [Washington, D.C.] :War Dept., Corps of Engineers, 1919.
APA
United States. War Department. Corps of Engineers. (1919). Chart of Harbor at Duluth, Minn. and Superior, Wisconsin [Map]. [Washington, D.C.] :War Dept., Corps of Engineers,
Chicago
United States. War Department. Corps of Engineers. “Chart of Harbor at Duluth, Minn. and Superior, Wisconsin.” [Washington, D.C.] :War Dept., Corps of Engineers, 1919.
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