The Daily Express. (San Antonio, Tex.), Vol. 41, No. 111, Ed. 1 Saturday, April 21, 1906, newspaper, April 21, 1906; (https://texashistory.unt.edu/ark:/67531/metapth440907/m1/1/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .