The Helena Free Press. (Helena, Okla. Terr.), Vol. 4, No. 41, Ed. 1 Friday, May 31, 1907, newspaper, May 31, 1907; (https://gateway.okhistory.org/ark:/67531/metadc2083151/m1/1/: accessed June 28, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .