Houghton County, Michigan.

1936

Upper Peninsula Development Bureau

Keweenaw Waterway Michigan Including Torch Lake

1954

U.S. Lake Survey

1:30k

Baraga County, Michigan.

1936

Upper Peninsula Development Bureau

Houghton

1912

1:63k

Keweenaw Waterway Michigan Including Torch Lake

1948

U.S. Lake Survey

1:30k

Keweenaw Waterway Mchigan Including Torch Lake

1940

U.S. Lake Survey

1:30k

Keweenaw Waterway Including Torch Lake

1973

NOS Lake Survey Center

1:30k

Keweenaw Waterway Michigan Including Torch Lake

1941

U.S. Lake Survey

1:30k

Keweenaw Bay Lake Superior

1946

U.S. Lake Survey

1:30k

Sidnaw

1954

1:63k