The Hereford Brand (Hereford, Tex.), Vol. 67, No. 37, Ed. 1 Thursday, September 12, 1968, newspaper, September 12, 1968; (https://texashistory.unt.edu/ark:/67531/metapth1321705/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .