"Speech of Mr. Benton, of Missouri, in Reply to Mr. McDuffie."
"Speech of Mr. Benton, of Missouri, in Reply to Mr. McDuffie.", text, June 15, 1844; (texashistory.unt.edu/ark:/67531/metapth32996/: accessed May 27, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting Star of the Republic Museum.