Zavala County Sentinel (Crystal City, Tex.), Vol. 20, No. 2, Ed. 1 Friday, June 5, 1931, newspaper, June 5, 1931; (https://texashistory.unt.edu/ark:/67531/metapth1096919/m1/1/: accessed July 10, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .