Henderson, Virgil L. State Sentinel (Stigler, Okla.), Vol. 16, No. 10, Ed. 1 Thursday, June 2, 1921, newspaper, June 2, 1921; (https://gateway.okhistory.org/ark:/67531/metadc99867/m1/1/: accessed December 14, 2018), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .