Sarles

1970

1:24k

Joint Maps of the Northern Boundary of the United States From the Lake of the Woods to the Summit of the Rocky Mountains

1878

NORTH AMERICAN BOUNDARY COMMISSION

1:127k

Joint Map No. VII. United States Northern Boundary Commission. (Canadian Border).

1878

Campbell, A.

1:127k

Langdon

1985

1:100k

Langdon

1985

1:100k

Devils Lake

1956

1:250k

Devils Lake

1953

1:250k

Devils Lake

1953

1:250k

Devils Lake

1953

1:250k

Rock Lake

1985

1:100k