Collection
- Dan H. Pletta Papers16
- David H. Sutton, Compiler, Research Papers regarding Helvetia, West Virginia3
- David Weimer, Collector, Seneca and Houze Glass Records19
- Davis & Davis Law Firm Records21
- Davis Coal and Coke, Coal Mining and Railroad Company, Records28
- Dolores Fleming, Research Papers regarding the Glass Industry, South Park Homes, and Other Topics3
- Don Knotts, Actor, Scripts, Sound Recordings, and Other Material11
- Dr. William A. Neal Papers10