Pietrusky, G. Oklahoma Neuigkeiten. (Perry, Okla.), Vol. 16, No. 2, Ed. 1 Thursday, May 10, 1917, newspaper, May 10, 1917; (https://gateway.okhistory.org/ark:/67531/metadc943730/m1/1/: accessed April 23, 2018), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .