Věstník (West, Tex.), Vol. 52, No. 14, Ed. 1 Wednesday, April 1, 1964, newspaper, April 1, 1964; (https://texashistory.unt.edu/ark:/67531/metapth625625/m1/20/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .