The Elk City Daily News (Elk City, Okla.), Vol. 30, No. 136, Ed. 1 Sunday, March 20, 1960, newspaper, March 20, 1960; (https://gateway.okhistory.org/ark:/67531/metadc2090039/m1/1/: accessed July 11, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .