- Kanawha County (W. Va.) Court Records and Miscellaneous Papers, 1773/193331
- Kanawha County Land Grants, 1817/18411
- Kanawha County, Board of School Commissioners, Records, 1812/1848, bulk 1828/18481
- Katherine Courtenay Johnston Collection, 1829/19461
- Katherine G. Johnson, Mathematician, Papers, 1800/2024, bulk 2016/20214
- Kennedy-Barton Book Collection (MS277), 1753/18341
- Kenneth Fones-Wolf, Historian, Research Papers Regarding Confederacy Supporters in Wheeling, 1819/2004, bulk 1850/18701
- Key Family Papers, 1812/19042
- Kincaid Family Papers, 1803/18802
- Kingwood Methodist Church History and Baptismal Record, 1816/18961