Polk County Enterprise (Livingston, Tex.), Vol. 85, No. 13, Ed. 1 Thursday, December 1, 1966, newspaper, December 1, 1966; (https://texashistory.unt.edu/ark:/67531/metapth781374/m1/1/: accessed April 26, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .