Harmon County Tribune (Hollis, Okla.), Vol. 10, No. 33, Ed. 1 Thursday, April 1, 1920, newspaper, April 1, 1920; (https://gateway.okhistory.org/ark:/67531/metadc234224/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .