The Mangum Star (Mangum, Okla.), Vol. 62, No. 29, Ed. 1 Thursday, April 21, 1960, newspaper, April 21, 1960; (https://gateway.okhistory.org/ark:/67531/metadc2140310/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .