Robertson, Orrin. The Democrat. (McKinney, Tex.), Vol. 1, No. 13, Ed. 1 Thursday, May 1, 1884, newspaper, May 1, 1884; (https://texashistory.unt.edu/ark:/67531/metapth191390/m1/1/: accessed September 24, 2016), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .