1878
NORTH AMERICAN BOUNDARY COMMISSION
1:127k
1878
Campbell, A.
1:127k
1878
Twining, W.J.
1:507k
1878
Campbell, A.
1:127k
1935
1:500k
1927
National Map Company
1:2m
1924
Rand McNally and Company
1:887k
1909
Cram, George Franklin
1:2m
1903
Rand McNally and Company
1:600k
1897
Rand McNally and Company
1:1m