1966
O'Brien, Emmett J
1:32k
1882
Dutton, Clarence E. (Clarence Edward), 1841-1912
1:250k
1873
Wheeler, G.M.
1:507k
1869
1:760k
1866
U.S. General Land Office
1:1m
1897
Rand McNally and Company
1879
Mahon, Charles
1:634k
Holdredge, Sterling M.
1:3m
1878
Powell, John Wesley, 1834-1902.
1:630k
