Cedar Hill Citizen (Cedar Hill, Tex.), Vol. 1, No. 32, Ed. 1 Thursday, April 13, 1972, newspaper, April 13, 1972; (https://texashistory.unt.edu/ark:/67531/metapth568686/m1/4/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .