Pope, Joe L. Amarillo Daily News (Amarillo, Tex.), Vol. 12, No. 210, Ed. 1 Wednesday, September 7, 1921, newspaper, September 7, 1921; (https://texashistory.unt.edu/ark:/67531/metapth318897/m1/1/: accessed December 12, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .