General soil map, Louisiana - Public domain map

"Source: DMA Operational Navigation Chart (ONC) 1:1,000,000 series and State Soil Geographic (STATSGO) Database."
"Produced as a cooperative effort between NRCS Soil Survey Staff, Louisiana Department of Agriculture and Forestry, Louisiana State University and Agricultural and Mechanical College, Louisiana Agricultural Experiment Station."
"1008431."
Available also through the Library of Congress Web site as a raster image.