1899
Cram, George Franklin, 1841-1928
1:400k
1878
U.S. Geological and Geographical Survey of the Territories
1:253k
1872
Hayden, F.V.
1:317k
1878
U.S. Geological and Geographical Survey of the Territories
1:253k
1991
Mora, Jo (1876-1947)
1875
Ludlow, William
1:760k
1991
Mora, Jo (1876-1947)
1881
Heubach, Emil
1:750k
1893
Union Pacific Railway Company.
1915
USGS (U.S. Geological Survey); Renshawe, J. H. (John Henry), 1852-
1:63k