Ambrose

1948

1:24k

Ambrose

1948

1:24k

Ambrose

1948

1:24k

International Boundary, From the Gulf of Georgia to the Northwestern Point of the Lake to the Woods, Sheet No. 41

1921

International Boundary Commission

1:63k

Crosby

1950

1:63k

Crosby

1950

1:63k

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. XII. United States Northern Boundary Commission. (Canadian Border).

1878

Campbell, A.

1:127k

Crosby

1984

1:100k

Crosby

1984

1:100k