Věstník (West, Tex.), Vol. 52, No. 20, Ed. 1 Wednesday, May 13, 1964, newspaper, May 13, 1964; (https://texashistory.unt.edu/ark:/67531/metapth627009/m1/1/: accessed July 2, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .