The Ada Evening News (Ada, Okla.), Vol. 57, No. 68, Ed. 1 Tuesday, May 31, 1960, newspaper, May 31, 1960; (https://gateway.okhistory.org/ark:/67531/metadc2113746/m1/1/: accessed June 10, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .