The Frederick Leader (Frederick, Okla.), Vol. 5, No. 58, Ed. 1 Friday, May 20, 1921, newspaper, May 20, 1921; (https://gateway.okhistory.org/ark:/67531/metadc1745934/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .