The Red Rock Opinion (Red Rock, Okla.), Vol. 4, No. 47, Ed. 1 Saturday, June 29, 1907, newspaper, June 29, 1907; (https://gateway.okhistory.org/ark:/67531/metadc132140/m1/1/: accessed April 24, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .