Slater, H. D. El Paso Herald (El Paso, Tex.), Ed. 1, Friday, January 21, 1916, newspaper, January 21, 1916; (https://texashistory.unt.edu/ark:/67531/metapth138324/m1/1/: accessed October 15, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .