- Kammerer Family Business Collection, 1842/191410
- Kanawha County (W. Va.) Court Records and Miscellaneous Papers, 1773/193337
- Kanawha Salt Industry, Records, 1837/18971
- Kate M. Walsh Diary, 1866/18912
- Kate Tuck Letters, 1870/18791
- Katherine Courtenay Johnston Collection, 1829/19462
- Katherine G. Johnson, Mathematician, Papers, 1800/2024, bulk 2016/20215
- Katherine Williams, Collector, Williams Family Papers, 1840/200513
- Kathleen Bonnie Crispin Worsham papers, 1860/20183
- Kattie W. Law Scrapbook, 1863/18752
- Keller Hotel of Romney, West Virginia, Hotel Register, 1854/1909, bulk 1855/19071
- Kendall Family of Marion County Papers, 1849/1959, bulk 1900/19451
- Kenneth Fones-Wolf, Historian, Research Papers Regarding Confederacy Supporters in Wheeling, 1819/2004, bulk 1850/18701
- Kent's Store Records, 1868/194714
- Key Family Papers, 1812/19042