1906
U.S. Lake Survey
1:80k
1914
U.S. Lake Survey
1:80k
1872
Gray, Ormando Willis; Walling, H. F.
1:300k
1948
Hammond, C.S.
1:585k
1924
Rand McNally and Company
1:539k
1889
Cram, George
1:700k
1890
Mitchell, Samuel Augustus
1:900k
1882
Mitchell, Samuel Augustus Jr.
1:900k
1880
Mitchell, Samuel Augustus
1:1m
1879
Rand McNally and Company
1:1m