Zavala County Sentinel (Crystal City, Tex.), Vol. [17], No. [51], Ed. 1 Friday, May 10, 1929, newspaper, May 10, 1929; (https://texashistory.unt.edu/ark:/67531/metapth1096833/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .