Robson, G. W. The Frontier Echo (Jacksboro, Tex.), Vol. 1, No. 21, Ed. 1 Friday, November 26, 1875, newspaper, November 26, 1875; (https://texashistory.unt.edu/ark:/67531/metapth233774/m1/1/: accessed April 18, 2019), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .