- Frank Gardiner Wisner papers, 1909/19971
- Gary Weiner, Collector, Clarksburg Historical Records, 1850/2006, bulk 1870/20006
- Gitchell's Studio collection (accession 2017-0077), 1972/2016, bulk 1990/201414
- Glen H. Hiner, Jr. Papers, 1923/20165
- Grace Martin Taylor, Artist, Papers, 1904/20196
- Harry Heflin Family Papers, 1930/20001
- Henry Doktorski, Compiler, Records regarding Kirtanananda Bhaktipada Swami and the New Vrindaban Commune, 1949/202012
- Henry Louis Gates, Jr., Professor, Galley Copies of Books, 1978/2012, bulk 1990/200420
- Henry Rauch, Geology Professor, West Virginia Surface Mine Board, Case Files, 1978/20084
- Hiram Carpenter, Records of a Pleasants County Businessman, 1914/1980, bulk 1918/19661
- Historic manuscript collection, 1601/19331
- Institute for the History of Technology and Industrial Archaeology Records, 1875/2005, bulk 1980/20057
- Irene McKinney, Poet, Papers, 1950/20118
- J. Davitt McAteer Papers regarding Mining Safety, 1860/2013, bulk 1970/20108
- Jan Karon papers, 1918/2018, bulk 1964/20185