Survey of the Mississippi River; made under the direction of the Mississippi River Commission. Contains Charts 135-148, 150, 152-165, 167-168, 470-171, 177, 184-189. Each chart is at a scale of 1:20,000. Charts also show river depths and include an Authorities and Notes section. Some charts show land owners adjacent to the river. 63 x 101 centimeters Scale 1:20,000.; Scale 1:10,000 General Map Collection