1904
Corps of Engineers
1:25k
1973
U.S. Lake Survey
1:80k
1911
1:120k
1935
U.S. Lake Survey
1:15k
1897
League of American Wheelmen, Wisconsin Division
1:253k
1931
O'Keefe, Mary A.
1932
Wright, John K.
1846
Lapham, I.A.
1:634k
1842
Tanner, Henry S.
1:1m
1846
Mitchell, Samuel Augustus
1:1m