Hartman, Fred. The Baytown Sun (Baytown, Tex.), Vol. 45, No. 240, Ed. 1 Sunday, March 31, 1968, newspaper, March 31, 1968; (https://texashistory.unt.edu/ark:/67531/metapth1061384/m1/1/: accessed May 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .