Wankan, Fred E. The Plano Star-Courier (Plano, Tex.), Vol. 26, No. 51, Ed. 1 Thursday, May 20, 1915, newspaper, May 20, 1915; (https://texashistory.unt.edu/ark:/67531/metapth601699/m1/1/: accessed April 20, 2019), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .