Lake Keystone News (Mannford, Okla.), Vol. 11, No. 10, Ed. 1 Thursday, March 5, 1970, newspaper, March 5, 1970; (https://gateway.okhistory.org/ark:/67531/metadc1945353/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .