1911. United States. Mississippi River Commission. 63 maps;360,000." "Contour lines are five feet apart.";56 x 92 cm.;1:20,000. Mississippi River Commission (St. Louis, Mo.).
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2. Survey of the Mississippi River [map] / made under the direction of the Mississippi River Commission
1890. United States. Mississippi River Commission. Several sheets are missing);1 map on 80 sheets;91 x 91 cm.;1:20,000. The Commission (Washington, D.C.).