The Hopkins County Echo (Sulphur Springs, Tex.), Vol. 88, No. 13, Ed. 1 Friday, March 29, 1963, newspaper, March 29, 1963; (https://texashistory.unt.edu/ark:/67531/metapth826783/m1/4/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .