Collection
- O'Shaughnessy Family Papers17
- O.D. Linder, Compiler, Genealogy Records Regarding the Boyce, Dever, Gibson, and Linder Families1
- O.J. Morrison Department Stores Company (West Virginia and Ohio) Records1
- O.W. Riegel Papers1,099
- Oak Grove Baptist Church Records1
- Oak Grove Baptist Church collection2
- Obituaries of Ritchie and Tyler County Residents1
- Ocean View, Seaside, and Seaview Amusement Parks Collection57
- Office of Admission records4
- Office of Alumni Engagement records3
- Office of Communications and Marketing subject files162
- Office of Communications and Public Affairs records8
- Office of Educational Media2
- Office of Grants and Research Administration Records1
- Office of Institutional Research and Assessment Records1