Čechoslovák and Westske Noviny (West, Tex.), Vol. 9, No. 20, Ed. 1 Friday, May 14, 1920, newspaper, May 14, 1920; (https://texashistory.unt.edu/ark:/67531/metapth404503/m1/1/: accessed December 11, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .