1914
U.S. Lake Survey
1:80k
1906
1872
Gray, Ormando Willis; Walling, H. F.
1:300k
1829
Burr, David H., 1803-1875
1:151k
1973
NOS Lake Survey Center
1:15k
1956
1941
1903
1901
1924
Rand McNally and Company
1:539k
