The Simmons Brand (Abilene, Tex.), Vol. 5, No. 28, Ed. 1, Saturday, April 16, 1921, newspaper, April 16, 1921; (https://texashistory.unt.edu/ark:/67531/metapth97788/m1/1/: accessed June 7, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .