Zavala County Sentinel (Crystal City, Tex.), Vol. 20, No. 11, Ed. 1 Friday, August 7, 1931, newspaper, August 7, 1931; (https://texashistory.unt.edu/ark:/67531/metapth1096127/m1/5/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .