Oklahoma City Times (Oklahoma City, Okla.), Vol. 56, No. 46, Ed. 1 Tuesday, April 15, 1975, newspaper, April 15, 1975; (https://gateway.okhistory.org/ark:/67531/metadc1796642/m1/1/: accessed July 5, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .