1887
Pearson, Alva H.
1:127k
1951
United States. Air Force
1:500k
1846
Preuss, Charles
1:634k
1874
Jones, William A.
1:600k
1862
Mitchell, D.T.
1:589k
1895
United States. War Department
1:634k
1867
Mitchell, D.T.
1:589k
1846
Preuss, Charles
1:634k
1939
Rand McNally and Company
1:1m
1941
Cooper, Frank A.
1:1m