1972
1:24k
1987
1:24k
1952
United States. Air Force
1:500k
1987
1:24k
1944
United States. Department of Commerce
1:500k
1939
1:63k
1958
United States Post Office Department
1:2m
1891
Rand McNally and Company
1:507k
1932
C&GS
1:621k
1901
Murray-Aaron, Eugene, 1852-1941.
1:2m