San Antonio Register (San Antonio, Tex.), Vol. 8, No. 2, Ed. 1 Friday, April 15, 1938, newspaper, April 15, 1938; (https://texashistory.unt.edu/ark:/67531/metapth398364/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .