1934
1:63k
1952
United States. Air Force
1:500k
1952
United States. Air Force
1:500k
1857
Colton, J. H.
1:507k
1933
1:500k
1929
Ford Motor Company
1:500k
1899
Walcott, Charles D.
1:500k
1902
Fitch, Charles H.
1:500k
1890
Mitchell, Samuel Augustus
1:1m
1886
Mitchell, Samuel Augustus
1:1m