1914
Renshawe, J. H.
1:188k
1912
Washington : U.S. Geological Survey
1878
Bechler, G.R. ; Clark, Fred A.
1:253k
1871
Geological Survey of the Territories (U.S.)
1:634k
1874
Jones, William Albert 1841-1914
1:1m
1881
Heubach, Emil
1:750k
1872
Bechler, Gustavus R.
1:11k
1879
Hayden, Ferdinand Vandeveer
1:507k
1876
Becker, Charles
1:6k
1876
Gillespie, George Lewis 18..-....; États-Unis. Corps of Engineers
1:2m