Coltrin, George W. The Mathis News (Mathis, Tex.), Vol. 26, No. 9, Ed. 1 Friday, February 28, 1941, newspaper, February 28, 1941; (https://texashistory.unt.edu/ark:/67531/metapth1038450/m1/1/: accessed April 19, 2019), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .