Slater, H. D. El Paso Herald (El Paso, Tex.), Ed. 1, Saturday, May 3, 1913, newspaper, May 3, 1913; (https://texashistory.unt.edu/ark:/67531/metapth130752/m1/1/: accessed December 18, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .