1999
1860
Captain G. H. Richards
1881
1:200k
1854
U.S. Lake Survey
1866
Unknown
Campbell, Archibald
1:60k
1910
Clason
1858
U.S. General Land Office
1:1m
1859
Ravenstein, E. G.
1:2m
1924
Rand McNally and Company
1:950k