Věstník (West, Tex.), Vol. 55, No. 42, Ed. 1 Wednesday, October 18, 1967, newspaper, October 18, 1967; (https://texashistory.unt.edu/ark:/67531/metapth626781/m1/1/: accessed July 12, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .