The Dallas Express (Dallas, Tex.), Vol. 28, No. 36, Ed. 1 Saturday, June 11, 1921, newspaper, June 11, 1921; (https://texashistory.unt.edu/ark:/67531/metapth278357/m1/3/: accessed September 8, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .