The De Leon Free Press (De Leon, Tex.), Vol. 67, No. 42, Ed. 1 Thursday, April 18, 1957, newspaper, April 18, 1957; (https://texashistory.unt.edu/ark:/67531/metapth1260529/m1/2/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .