Texas State Historical Association. The Quarterly of the Texas State Historical Association, Volume 10, July 1906 - April, 1907, periodical, 1907; (https://texashistory.unt.edu/ark:/67531/metapth101040/m1/77/: accessed August 14, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .