1941
Montana. State Highway Commission.
1:127k
1951
United States. Air Force
1:500k
1966
Shane, Ralph M.
1878
Twining, W.J.
1:507k
1935
C&GS
1:500k
1875
Ludlow, William
1:760k
1875
Cram Atlas Company
1:1m
1938
United States. Post Office Department
1:766k
1938
Thomas Brothers
1:2m
1879
U.S. General Land Office
1:1m