Věstník (West, Tex.), Vol. 61, No. 10, Ed. 1 Wednesday, March 7, 1973, newspaper, March 7, 1973; (https://texashistory.unt.edu/ark:/67531/metapth625476/m1/16/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .