Hollis Post-Herald. (Hollis, Okla.), Vol. 18, No. 26, Ed. 1 Thursday, May 12, 1921, newspaper, May 12, 1921; (https://gateway.okhistory.org/ark:/67531/metadc185295/m1/1/: accessed April 24, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .