1970
1:24k
1954
1:250k
1964
1:250k
1962
1:24k
1951
United States. Air Force
1:500k
1951
United States. Air Force
1:500k
1952
United States. Air Force
1:500k
1891
Rand McNally and Company
1:507k
1924
Rand McNally and Company
1:1m
1867
U.S. War Department
1:2m