1951
United States. Air Force
1:500k
1952
United States. Air Force
1:500k
1952
United States. Air Force
1:500k
1952
United States. Air Force
1:500k
1932
C&GS
1:621k
1929
Ford Motor Company
1:500k
1859
Petermann, August
1944
United States. Department of Commerce
1:500k
1886
Colton, G.W.
1:2m
1914
Kenyon Company
1:1m