- Clarksburg Public Library, Collector, Miscellaneous Papers, 1782/18651
- Cleaver Family Papers, 1777/19692
- Currency Collection, 1772/18991
- D. Boston Stewart Papers, 1782/1919, bulk 1862/19061
- David Hunter Strother, Artist, Artwork and Papers, 1744/1996, bulk 1833/18872
- Davis-Meranda Family of Clark County, Ohio, Genealogy, 1770/18501
- Deakins Family Papers and Surveying Compass, 1778/19251
- Deakins Family Papers, 1778/19251
- Doddridge Family Manuscript, 1745/18571
- Donovan H. Bond, Compiler, Research Papers regarding Vandalia Colony and West Virginia Forts, 1962/2002, bulk 1756/19951
- Doris V. Welsh, Compiler, Varner and Darrah Families Papers, 1775/19181
- Earl L. Core (1902-1984) Papers, 1756/19858
- Easton-Avery Community History, 1769/19271
- Eileen Peters, Compiler, Genealogy, 1887/199522
- Elise S. Billmyer, Collector, Papers, 1636/19611