- Alfred Beckley (1802-1888) Papers, 1832/18561
- Alfred Beckley (1802-1888) Papers, 18361
- Brown and Parsons Families Papers, 1846/19601
- County Highway Maps for West Virginia, 19371
- Daniel Hale, Physician and Conservationist, Papers, 1953/19751
- E. Meade McNeill, Botanist, Field Notebook, 19301
- Forrest E. Walker Letters, 1914/19171
- J.B.F. Yoak, Jr., Collector, Papers1
- James S. Martin Address at the Dedication of the Colonel William Henderson French (1812-1872) Marker, Typed Document, 19611
- Long/Trail Southeastern West Virginia Historical Records, 1870/20251
- Maggie Anderson, Poet, Papers, 1958/2017, bulk 1980/20121
- McClaugherty Family Civil War Letter and Financial Papers, 1841/18721
- McCoy Family Papers, 1761/19031
- Meadows Heritage Genealogy Records, 1975/19921
- Mercer County History, 1700/19351