1914
1:63k
1886
1:250k
1859
Simpson, J.H.
1879
Geographical and Geological Survey of the Rocky Mountain Region (U.S.)
1:634k
1861
Beckwith, E.G.
1:760k
1876
Wheeler, G.M.
1:1m
1878
Cram, George Franklin
1863
Weekly Dispatch; Weller, Edward, 1819-1884
1:100k
1875
Cram Atlas Company
1:1m
1882
Cram, George Franklin
1:2m