1941
Montana. State Highway Commission.
1:127k
1872
US Ex. Ex.
1:143k
1874
United States. Army. Corps of Engineer
1:760k
1940
Rand McNally and Company
1:1m
1927
1:2m
1901
Cram, George
1933
Mid-West Map Company
Murray-Aaron, Eugene, 1852-1941.
