The Houston Post. (Houston, Tex.), Vol. 33, No. 63, Ed. 1 Wednesday, June 6, 1917, newspaper, June 6, 1917; (https://texashistory.unt.edu/ark:/67531/metapth609457/m1/1/: accessed November 14, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .