1878
U.S. Geological and Geographical Survey of the Territories
1:253k
1881
Heubach, Emil
1:750k
1948
Hammond, C.S.
1:2m
1901
Murray-Aaron, Eugene, 1852-1941.
1:1m
1882
Cram, George Franklin
1:2m
1889
Cram, George
1:1m
1882
Cram, George Franklin
1:2m
1924
Rand McNally and Company
1956
Shell Oil Company
1:1m
1909
Cram, George Franklin; Davis, Ellis Arthur
1:2m