Polk County Enterprise (Livingston, Tex.), Vol. 86, No. 4, Ed. 1 Thursday, September 28, 1967, newspaper, September 28, 1967; (https://texashistory.unt.edu/ark:/67531/metapth781280/m1/1/: accessed April 23, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .