The Breckenridge Daily American (Breckenridge, Tex), Vol. 1, No. 304, Ed. 1, Monday, June 20, 1921, newspaper, June 20, 1921; (https://texashistory.unt.edu/ark:/67531/metapth122214/m1/1/: accessed April 23, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .