1880
Wheeler, G.M.
1:253k
1880
Wheeler, G.M.
1:253k
1846
Preuss, Charles
1:634k
1881
Wheeler, G.M.
1:253k
1878
Wheeler, G.M.
1:253k
1878
Wheeler, G.M.
1:253k
1858
Campbell, Albert
1:6m
1878
U.S. Geological and Geographical Survey of the Territories
1:507k
1861
Beckwith, E.G.
1:760k
1893
Union Pacific Railway Company.