Thrall, Homer S., 1819-1894. A Pictorial History of Texas, From the Earliest Visits of European Adventurers, to A.D. 1879., book, 1879; (https://texashistory.unt.edu/ark:/67531/metapth5828/m1/1/: accessed November 15, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .