The Shamrock Texan (Shamrock, Tex.), Vol. 61, No. 9, Ed. 1 Thursday, June 4, 1964, newspaper, June 4, 1964; (https://texashistory.unt.edu/ark:/67531/metapth529894/m1/2/: accessed July 3, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .