Siskiwit Bay

1985

1:100k

Hancock

1966

1:250k

Hancock

1958

1:250k

Hancock

1958

1:250k

Isle Royale, Michigan.

1936

Upper Peninsula Development Bureau

Upper Peninsula, scale six miles to an inch, Isle Royale (and Keweenaw Co.)

1873

Walling, H. F.

1:380k

Lake Superior Including Isle Royale Michigan

1946

U.S. Lake Survey

1:120k

Keweenaw County, Michigan.

1936

Upper Peninsula Development Bureau

North West Coast Oflake Superior From Grand Portage Bay to Great Shaganash Islands Including Isle Royal Michigan

1905

U.S. Lake Survey

1:120k

Nautical Chart of Isle Royal, Lake Superior

1871

Corps of Engineers

1:30k