1947
Lindgren, Jolly
1992
Little, David
1901
Cram, George
1:387k
1889
Cram, George
1:380k
1912
Washington : U.S. Geological Survey
1898
Northern Pacific Railway Company
1:169k
1878
Bechler, G.R. ; Clark, Fred A.
1:253k
1878
U.S. Geological and Geographical Survey of the Territories
1:253k
1904
Hague, Arnold
1:125k
1879
Hayden, Ferdinand Vandeveer
1:507k