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; digital images, (http://texashistory.unt.edu/ark:/67531/metapth6102/ : accessed May 25, 2013), University of North Texas Libraries, The Portal to Texas History, http://texashistory.unt.edu; crediting UNT Libraries, Denton, Texas.
