1901
U. S. Geological Survey
1:63k
1878
Snyder, Van Vechten & Co.
1:180k
1985
1:100k
1985
1:100k
1874
Andreas, A. T. (Alfred Theodore), 1839-1900
1:317k
1965
1:250k
1958
1:250k
1955
1:250k
1897
League of American Wheelmen, Wisconsin Division
1:253k
1951
United States. Air Force
1:500k