St Marys River Lake Huron to Lake Munuscong Including Potagannissing Bay

1964

NOS Lake Survey Center

1:40k

Chippewa County, Michigan.

1936

Upper Peninsula Development Bureau

St Marys River From Twin Islands to Sault Ste Marie

1902

1:40k

St Marys River From Twin Islands to Sault Ste Marie

1898

1:40k

St Marys River Twin Islands to Sault Ste Marie

1921

1:40k

Upper Peninsula, scale six miles to an inch (Chippewa and Mackinac counties)

1873

Walling, H. F.

1:380k

Preliminary Chart of Part of Lake Superior

1878

U.S. Lake Survey

1:400k

Michigan (Northern Part).

1948

Hammond, C.S.

1:1m

Michigan (Southern Part).

1948

Hammond, C.S.

1:1m

Michigan.

1886

Colton, G.W.

1:950k