Čechoslovák and Westske Noviny (West, Tex.), Vol. 38, No. 20, Ed. 1 Friday, May 17, 1957, newspaper, May 17, 1957; (https://texashistory.unt.edu/ark:/67531/metapth783225/m1/1/: accessed July 8, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .