Chickasha Daily Express (Chickasha, Okla.), Vol. 99, No. 30, Ed. 1 Sunday, April 15, 1990, newspaper, April 15, 1990; (https://gateway.okhistory.org/ark:/67531/metadc1874891/m1/1/: accessed June 1, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .