Guide to Research CollectionsLibrary of Congress
Papers: Correspondence in Breckinridge family papers, 1752-1965. Finding aid.
Mississippi State University
Mitchell Memorial Library
Mississippi State, MS
Papers: Correspondence in Frank Archibald Critz papers, 1880-1937. Finding aid.
Proctor Free Library
Papers: 1852-1908 (bulk 1881-1908). 19 boxes. Includes personal and professional correspondence, speeches, letterbooks, biographical sketches, and photographs. Finding aid.
University of Vermont
Papers: 4 items. Also photographs.
Vermont Historical Society
Papers: 1889-1892. 7 volumes. Scrapbooks containing clippings, speeches, letters to Proctor, and material on other government service. Finding aid.
Yale University Libraries
Manuscripts and Archives
New Haven, CT
Papers: In Carrington family papers, 1749-1929; and Benjamin Butterworth papers, 1857-1908.