The Simmons Brand (Abilene, Tex.), Vol. [15], No. 29, Ed. 1, Saturday, May 9, 1931, newspaper, May 9, 1931; (https://texashistory.unt.edu/ark:/67531/metapth97979/m1/1/: accessed April 26, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .