The Ennis Daily News (Ennis, Tex.), Vol. 76, No. 69, Ed. 1 Thursday, March 21, 1968, newspaper, March 21, 1968; (https://texashistory.unt.edu/ark:/67531/metapth1650151/m1/5/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .