Carter, William T. (William Thomas); Hendrickson, B. H. (Bertram Higbie) & Strike, W. W. (Wendell William). Soil survey of Dickens County, Texas, book, 1926; (https://texashistory.unt.edu/ark:/67531/metapth19797/m1/1/: accessed October 19, 2021), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .