Correspondence, poems, articles, addresses, account book, and Delta Kappa Epsilon autograph book; letter book, 1883-1884, dealing mainly with prisons and jails in Michigan which Barbour inspected; scrapbook of miscellaneous clippings and scattered correspondence. Portraits and informal photos of Barbour, daguerrotypes of Barbour as a child and of his father, John Barbour, and autograph book (1860s) with portraits of members of Delta Kappa Epsilon (University of Michigan); a composite photo of the a composite photo of Michigan Constitutional Convention, 1907/1908 (with Barbour).