1967
1:63k
1954
1:63k
1950
1:63k
1891
1:63k
1891
1:63k
1891
1:63k
1891
1:63k
1891
1:63k
1895
United States. Mississippi River Commission
1:10k
1998
1:24k
1992
1:24k
1966
1:24k
1966
1:24k
1966
1:24k
1966
1:24k
1966
1:24k
1951
1:24k
1951
1:24k
1939
1:32k
1939
1:32k
1939
1:32k
1932
1:32k