1940
U.S. Dept. of Agriculture Bureau of Soils
1:63k
1915
Brink, John G.
1:36k
1878
Snyder, Van Vechten & Co.
1:13k
1872
Lloyd, H.H.
1:253k
1857
Lothrop, J. Jr.
1:3k
1935
Schaeffer, M.B.
1:48k
1956
Shell Oil Company
1:206k
1871
1897
League of American Wheelmen, Wisconsin Division
1:127k
