The Houston Post. (Houston, Tex.), Vol. 37, No. 59, Ed. 1 Thursday, June 2, 1921, newspaper, June 2, 1921; (https://texashistory.unt.edu/ark:/67531/metapth609357/m1/1/: accessed February 16, 2019), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .