Chart of Harbor at Duluth, Minn. and Superior, Wisconsin / prepared and first issued under the directions of Colonel J.C. Sanford, and Lieut. Colonel Mason M. Patrick, Corps of Engineers, U.S. Army, in 1914-1915. , Second ed. / rev. and published under the direction of F.G. Ray.

1919

United States. War Dept. Corps of Engineers

1:24k

Chart of harbor at Duluth, Minn. and Superior, Wisconsin / prepared under the direction of Major W.L. Fisk, Corps of Engineers, U.S. Army, in 1902-1905.

1914

United States. War Dept. Corps of Engineers

1:18k

Chart of harbor at Duluth, Minn. and Superior, Wis. / prepared under the direction of Major W.L. Fisk, Corps of Engineers, U.S.A.

1901

United States. Army. Corps of Engineers

1:18k

Map of the city of Superior, Douglas County, Wis.

1900

1:29k

Map of the harbor at Duluth, Minn., and Superior, Wis. progress sheet no. 1 : dredging district N21 and easterly portion of district N22

1898

United States. Army. Corps of Engineers

1:16k

Superior, Wisconsin / copyright ... Geo. F. Kelly.

1916

Kelly, George Foster

1:13k

Superior, Douglass [i.e. Douglas] County, Wisconsin

1856

Wieland, Christian

1:7k

Karte von Wisconsin

1860

Meyer, J.

County map of Minnesota.

1860

Minnesota

1854

New York, N.Y. : J.H. Colton

1:3m