The Copan Leader. (Copan, Okla.), Vol. 2, No. 25, Ed. 1 Friday, June 29, 1917, newspaper, June 29, 1917; (https://gateway.okhistory.org/ark:/67531/metadc950748/m1/1/: accessed April 23, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .