1964
U.S. Lake Survey
1:80k
1897
League of American Wheelmen, Wisconsin Division
1:253k
1873
Walling, H. F.
1:380k
1911
1:120k
1856
Colton, G.W.
1:1m
1869
Colton, G.W.
1:2m
1865
Colton, G.W.
1:2m
1924
Rand McNally and Company
1:760k
1924
Rand McNally and Company
1:791k
1846
Mitchell, Samuel Augustus
1:1m