Sprague, John Titcomb. The treachery in Texas, the secession of Texas, and the arrest of the United States officers and soldiers serving in Texas. Read before the New-York Historical Society, June 25, 1861. By Major J. T. Sprague, U. S. A., book, 1862; (https://texashistory.unt.edu/ark:/67531/metapth6102/m1/11/: accessed November 19, 2017), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .