- Civil War Diary of a Confederate Soldier at Appomattox Court House, 18651
- Civilian Conservation Corps, Camp Diary, 1933/19341
- Clara Hough Diary, 1876/18771
- Clarence Edwin Smith (1885-1959) Papers, 1787/19572
- Clarksburg Public Library, Collector, Miscellaneous Papers, 1782/18651
- Courtney Family Papers, 1804/19201
- D.W. Rogers Manuscripts, 1832/19021
- David R. Preston Diary, 1828/18291
- David T. Rees, Collector, Orderly Book and Diary, 17781
- DeWitt Clinton Gallaher (1845-1926) Papers, 18691
- DeWitt Clinton Gallaher (1845-1926) Papers, 1869/18701
- Dr. John Frissell Medical Diary, 1850/18831
- Edward Evans Parrish (1791-1874), Oregon Trail Diary1
- Edwards Family Papers, 1844/19511
- Ellison Family Papers, 1819/19771