San Antonio Register (San Antonio, Tex.), Vol. 34, No. 5, Ed. 1 Friday, April 3, 1964, newspaper, April 3, 1964; (https://texashistory.unt.edu/ark:/67531/metapth403562/m1/1/: accessed July 3, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .