The Chickasha Daily Express (Chickasha, Okla.), Vol. 83, No. 48, Ed. 1 Wednesday, May 7, 1975, newspaper, May 7, 1975; (https://gateway.okhistory.org/ark:/67531/metadc1867377/m1/1/: accessed June 22, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .