1860
1876
Stieler, Adolf
1871
Geological Survey of the Territories (U.S.)
1:634k
1892
Stieler, Adolf
1915
Marshall, R. B.; Gerdine, T. G.; Matthes, François E.; United States Geological Survey
1:63k
1931
National Development Bureau
1:3m
1860
Meyer, J.
1845
Frémont, John Charles
1:2m
1842
1881
Heubach, Emil
1:750k