The Hopkins County Echo (Sulphur Springs, Tex.), Vol. 105, No. 20, Ed. 1 Friday, May 16, 1980, newspaper, May 16, 1980; (https://texashistory.unt.edu/ark:/67531/metapth779949/m1/3/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .