Marilynn Johnson (Self - Research Professor of History: Boston College), Stephen Aron (Self - President & CEO: Autry Museum of the American West), Edward T. O'Donnell (Self - Historian: College of the Holy Cross), Douglas Brinkley (Self), Yohuru Williams (Self - Professor of History: University of St. Thomas), H.W. Brands (Self - Author, Dreams of El Dorado: A History of the American West), Elliott West (Self - Author, Continental Reckoning), Peter Stark (Self - Author, Astoria), Shannon D. Smith (Self - Author, Give Me Eighty Men), Clay Jenkinson (Self - Author, The Character of Meriwether Lewis)