1926
1:63k
1963
1:250k
1984
1953
United States. Air Force
1:500k
1951
1910
C&GS
1:400k
1895
United States. War Department
1:634k
1859
Mitchell, Samuel Augustus
1:2m
1866
Colton, G.W.
1908
Cram, George
1:1m