La Prensa (San Antonio, Tex.), Vol. 8, No. 2,204, Ed. 1 Thursday, April 21, 1921, newspaper, April 21, 1921; (https://texashistory.unt.edu/ark:/67531/metapth1068408/m1/1/: accessed July 7, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .