The Hereford Brand (Hereford, Tex.), Vol. 71, No. 16, Ed. 1 Thursday, April 20, 1972, newspaper, April 20, 1972; (https://texashistory.unt.edu/ark:/67531/metapth1429546/m1/1/: accessed July 3, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .