Amarillo Daily News (Amarillo, Tex.), Vol. 12, No. 79, Ed. 1 Thursday, April 7, 1921, newspaper, April 7, 1921; (https://texashistory.unt.edu/ark:/67531/metapth318819/m1/1/: accessed July 6, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .