The Duncan Daily Banner (Duncan, Okla.), Vol. 1, No. 37, Ed. 1 Sunday, April 24, 1921, newspaper, April 24, 1921; (https://gateway.okhistory.org/ark:/67531/metadc1756783/m1/1/: accessed April 19, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .