1878
Snyder, Van Vechten & Co.
1:13k
1940
U.S. Dept. of Agriculture Bureau of Soils
1:63k
1915
Brink, John G.
1:36k
1872
Lloyd, H.H.
1:253k
1935
Schaeffer, M.B.
1:48k
1871
1897
League of American Wheelmen, Wisconsin Division
1912
Rand McNally and Company
1:380k
1870
Campbell, R.A.
1:350k
1924
