Alluvial valley of the Mississippi River : index of quadrangle maps / Prepared by the Mississippi River Commission under the direction of the Secretary of War and the supervision of the Chief of Engineers, United States Army.
MLA
Commission, United States. Mississippi River. Alluvial Valley of the Mississippi River : Index of Quadrangle Maps / Prepared by the Mississippi River Commission under the Direction of the Secretary of War and the Supervision of the Chief of Engineers, United States Army. Mississippi River Commission; 1946. https://collections.library.yale.edu/catalog/15814461.
APA, 6th edition
Commission, U. S. M. R. (1946). Alluvial valley of the Mississippi River : index of quadrangle maps / Prepared by the Mississippi River Commission under the direction of the Secretary of War and the supervision of the Chief of Engineers, United States Army. [Maps]. Mississippi River Commission; https://collections.library.yale.edu/catalog/15814461.
