The Mangum Star (Mangum, Okla.), Vol. 33, No. 35, Ed. 1 Thursday, February 10, 1921, newspaper, February 10, 1921; (https://gateway.okhistory.org/ark:/67531/metadc284194/m1/1/: accessed April 24, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .