The Hopkins County Echo (Sulphur Springs, Tex.), Vol. 104, No. 16, Ed. 1 Friday, April 20, 1979, newspaper, April 20, 1979; (https://texashistory.unt.edu/ark:/67531/metapth780874/m1/1/: accessed August 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .