The Lawton Constitution (Lawton, Okla.), Vol. 15, No. 218, Ed. 1 Thursday, April 20, 1916, newspaper, April 20, 1916; (https://gateway.okhistory.org/ark:/67531/metadc129118/m1/4/: accessed August 16, 2022), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .