- Festus P. Summers (1895-1971), Historian, Papers, 1843/19711
- Harrison Hagans (1796-1867) Papers, 1810/18951
- Harvey W. Harmer (1865-1961) Papers, 1842/19611
- Henri Jean Mugler Diary and Memoir, 1838/18991
- John Bassel (1840-1914) Papers, 1761/19481
- John Jacob Cornwell (1867-1953), Governor, Papers and Records, 1843/19531
- John Thomas McGraw (1856-1920) Papers, 1842/19481
- Marshall, Ohio, and Wood Counties Legislative Petitions, 1846/18541
- Parkersburg Town Council Journals, 1826/18741
- Preston Family Papers, 1817/19451
- Siler Family Papers, 1848/19681