Slater, H. D. El Paso Herald (El Paso, Tex.), Ed. 1, Tuesday, May 6, 1919, newspaper, May 6, 1919; (https://texashistory.unt.edu/ark:/67531/metapth138877/m1/1/: accessed April 19, 2019), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .