Slater, H. D. El Paso Herald (El Paso, Tex.), Ed. 1, Thursday, April 25, 1918, newspaper, April 25, 1918; (https://texashistory.unt.edu/ark:/67531/metapth143617/m1/1/: accessed October 21, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .