1911
1:120k
1964
U.S. Lake Survey
1:80k
1904
Corps of Engineers
1:25k
1935
U.S. Lake Survey
1:15k
1973
U.S. Lake Survey
1:80k
1897
League of American Wheelmen, Wisconsin Division
1:253k
1899
Randall and Williams
1899
Randall and Williams
1899
Randall and Williams
1899
Randall and Williams