Recurring Guest Characters Professor, Univ. of New Mexico 5 guest appearances Historian 4 guest appearances Author 2 guest appearances Historian, Univ. of Kentucky 2 guest appearances Prof., San Francisco State Univ. 2 guest appearances Arizona State Historical Society 1 guest appearances Descendant of Scout, "John Rope" 1 guest appearances Lakota Author 1 guest appearances Author, Dr. History's Whizz-Bang 1 guest appearances Prof., History Dept., Univ. of San Francisco 1 guest appearances Author, Bridging the Past 1 guest appearances Professor of History, UCLA 1 guest appearances