1903
1:15k
1897
Rand McNally and Company
1:2m
1941
Montana. State Highway Commission.
1:127k
1954
Simpson, Lucille
1875
Ludlow, William
1:760k
1881
Heubach, Emil
1:750k
1882
Bancroft, Hubert Howe.
1893
Union Pacific Railway Company.
1882
Cram, George Franklin
1:2m
1875
Cram Atlas Company
1:1m