The Twice-a-Week Herald. (Amarillo, Tex.), Vol. 21, No. 56, Ed. 1 Friday, July 13, 1906, newspaper, July 13, 1906; (https://texashistory.unt.edu/ark:/67531/metapth281569/m1/1/: accessed May 29, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .