1941
Montana. State Highway Commission.
1:127k
1967
Shane, Ralph M.
1943
United States. Office of War Information
1:1m
1938
Lindgren Brothers
1875
Ludlow, William
1:760k
1874
Jones, William A.
1:634k
1881
Heubach, Emil
1:750k
1951
Shell Oil Company
1:1m
1953
Wyoming Motor Court Association
1889
Rand McNally and Company
1:1m