The Lawton Constitution (Lawton, Okla.), Vol. 66, No. 229, Ed. 1 Thursday, June 20, 1968, newspaper, June 20, 1968; (https://gateway.okhistory.org/ark:/67531/metadc2036281/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .