1924
1:63k
1914
United States Geological Survey
1:63k
1927
Rand McNally and Company
1:76k
1952
United States. Air Force
1:500k
1872
Chicago, Burlington, and Quincy Railroad
1:2k
1951
United States. Air Force
1:500k
1857
Wiggin, C.P.
1:266k
1951
United States. Air Force
1:500k
1858
Colton, J. H.
1:507k
1852
Owen, David Dale