The Rule Review (Rule, Tex.), Vol. 62, No. 5, Ed. 1 Thursday, June 27, 1968, newspaper, June 27, 1968; (https://texashistory.unt.edu/ark:/67531/metapth982311/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .