United States. Department of Agriculture. Agricultural Research Administration. Bureau of Plant Industry, Soils, and Agricultural Engineering. Division of Soil Survey. and Texas Agricultural Experiment Station.. Soil map, Fannin County, Texas, Map, November 1946; digital image, (http://texashistory.unt.edu/ark:/67531/metapth19724/ : accessed May 16, 2012), University of North Texas Libraries, The Portal to Texas History, http://texashistory.unt.edu; crediting UNT Libraries Government Documents Department, Denton, Texas.
