Collection
- Office of Alumni Engagement records1
- Office of the Bursar Records9
- Office of the President Timothy J. Sullivan records1
- Office of the President. James Blair Records1
- Office of the President. James Madison Records2
- Ogden Family Papers2
- Ogden family papers6
- Ohio County (W. Va.) Court Records and Miscellaneous Papers69
- Ohio Historical Papers1
- Oliver Perry Chitwood, Compiler, Research Notes About and Copies of Letters by John Tyler1
- Ollen Lawrence Burnette, Jr. papers2
- Ollinger Crenshaw Papers3
- Oren F. Morton (1857-1926) Papers3
- Orum, Eskey, and McCaffery Family Papers1
- Oscar Doane Lambert, Historian, Papers regarding Historical Research1