Zavala County Sentinel (Crystal City, Tex.), Vol. 21, No. 47, Ed. 1 Friday, April 14, 1933, newspaper, April 14, 1933; (https://texashistory.unt.edu/ark:/67531/metapth1096931/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .