1951
United States. Air Force
1:500k
1885
1:125k
1918
1:125k
1951
United States. Air Force
1:500k
1951
United States. Air Force
1:500k
1964
1:250k
1891
Rand McNally and Company
1:507k
1924
Rand McNally and Company
1:1m
1867
U.S. War Department
1:2m
1874
Asher & Adams
1:1m