The Mangum Star And Southwest Eagle (Mangum, Okla.), Vol. 31, No. 47, Ed. 1 Thursday, May 8, 1919, newspaper, May 8, 1919; (https://gateway.okhistory.org/ark:/67531/metadc276390/m1/1/: accessed April 24, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .