Denton Record-Chronicle (Denton, Tex.), Vol. 65, No. 284, Ed. 1 Sunday, June 30, 1968, newspaper, June 30, 1968; (https://texashistory.unt.edu/ark:/67531/metapth1594628/m1/1/: accessed June 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .