The Chickasha Daily Express (Chickasha, Okla.), Vol. 77, No. 286, Ed. 1 Tuesday, January 20, 1970, newspaper, January 20, 1970; (https://gateway.okhistory.org/ark:/67531/metadc1865731/m1/1/: accessed April 28, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .