Smith, William G., et al. Soil survey of Taylor County, Texas, Book, 1918; digital images, (http://texashistory.unt.edu/ark:/67531/metapth19833/ : accessed May 21, 2013), University of North Texas Libraries, The Portal to Texas History, http://texashistory.unt.edu; crediting UNT Libraries Government Documents Department, Denton, Texas.
