1878
Campbell, A.
1:127k
1941
Montana. State Highway Commission.
1:127k
1941
Montana. State Highway Commission.
1:127k
1878
Campbell, A.
1:127k
1878
Twining, W.J.
1:507k
1935
1:500k
1878
Campbell, A.
1:127k
1944
State Farm Insurance Companies Travel Bureau
1:1m
1878
Twining, W.J.
1:507k
1940
Rand McNally and Company
1:1m