- O. Waldo West Correspondence2
- 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.P. Sydenstricker Prescription Books1
- O.W. Riegel Papers2,585
- OBrion, Toni. Artist file: miscellaneous uncatalogued material1
- ODU Monarch Community Alliance Records16
- ODU PREVIEW and Orientation Collection8
- ODYSSEY records13
- Oak Grove Baptist Church Records1
- Oak Grove Baptist Church collection14
- Oak Hill Engraving,
18584
- Oakley, Frances. Artist file: miscellaneous uncatalogued material1
- Oakley, Violet, 1874-1961. Artist file: miscellaneous uncatalogued material1
- Oakwood Avenue Baptist Church (Richmond, Va.), Records,
1916-192333