1963
1:24k
1991
1:100k
1958
1:250k
1954
1:250k
1954
1:250k
1944
United States. Department of Commerce
1:500k
1863
U.S. General Land Office
1:152k
1936
Rand McNally & Company
1958
United States Post Office Department
1:2m
1891
Rand McNally and Company
1:507k