1891
Roe, Frederick B.
1:32k
1886
1:32k
1901
Cram, George
1902
U. S. Geological Survey
1:63k
1951
United States. Air Force
1:12k
1973
NOS Lake Survey Center
1:120k
1897
League of American Wheelmen, Wisconsin Division
1:253k
1878
Snyder, Van Vechten & Co.
1:380k
1951
United States. Air Force
1:500k
1856
Chapman, Silas
1:635k