The Hopkins County Echo (Sulphur Springs, Tex.), Vol. 103, No. 18, Ed. 1 Friday, May 5, 1978, newspaper, May 5, 1978; (https://texashistory.unt.edu/ark:/67531/metapth780846/m1/1/: accessed July 10, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .