3-80 4-R-36516.' 'Base map prepared by the Geological Survey in cooperation with the Soil Conservation Service.' Includes vicinity map.JPEGUMN_ALMA:9957238170001701engU.S. Dept. of Agriculture, Soil Conservation Service (Fort Worth, Texas)PublicImportant farmlands, Comanche County, Oklahoma, 1981MapsOklahoma--Comanche CountyOklahoma1980University of Minnesota