Zavala County Sentinel (Crystal City, Tex.), Vol. [24], No. 50, Ed. 1 Friday, May 1, 1936, newspaper, May 1, 1936; (https://texashistory.unt.edu/ark:/67531/metapth1096832/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .