Siskiwit Bay

1985

1:100k

Passage Island

1895

1:63k

Passage Island

1895

1:63k

Passage Island

1895

1:63k

Isle Royale Michigan

1961

U.S. Lake Survey

1:40k

Isle Royale Michigan

1957

U.S. Lake Survey

1:40k

Todd Harbor

1985

1:100k

Todd Harbor

1985

1:100k

Isle Royale, Michigan.

1936

Upper Peninsula Development Bureau

Lake Superior Coast Grand Portage Bay Minn to Shesheeb Point Ont Including Isle Royale Michigan

1958

U.S. Lake Survey

1:120k