The Hennessey Clipper (Hennessey, Okla.), Vol. 28, No. 40, Ed. 1 Thursday, February 28, 1918, newspaper, February 28, 1918; (https://gateway.okhistory.org/ark:/67531/metadc106118/m1/1/: accessed September 18, 2021), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .