- Siler Family Papers, 1848/19681,144
- Early Records of the Mount Vernon Ladies' Association, 1853/1951, bulk 1853/1875235
- John L. Nau III Civil War History Collection, 1806/1988, bulk 1861/1865192
- Monongalia County (W. Va.) Court Records and Miscellaneous Papers, 1774/1954149
- Roy Bird Cook (1886-1961), Collector, Papers, 1679/1984, bulk 1840/1960137
- Gregory A. Prince Mormon Studies Collection, 1813/2020132
- Emory L. Kemp Papers regarding Industrial History, 1735/2021131
- Sheet Music Collection, 1827/1974114
- Restoration Files for the Historic Structures Report, 1750/2005113
- Galt Papers (III), 1750/1991111
- Ohio County (W. Va.) Court Records and Miscellaneous Papers, 1772/1954, bulk 1777/1930108
- Edward "Teddy" Bolton Tucker Papers, 1760/2007, bulk 1800/1900106
- Historical Photograph Collection, 1850/2010102
- James I. Robertson Jr. Papers, 1849/201197
- Mt. Washington Cog Railway Stereoscopic Photographs, 1865/186979