1891
Walker, O.W.
1:63k
1828
Hayward, James
1816
Warner, Benjamin
1:550k
1824
Finley, Anthony
1:360k
1827
Geological Survey (U.S.)
1831
1838
Bradford, Thomas G.
1:290k
1797
Sotzmann, Daniel Friedrich
1:190k
1:10k
