Creator
- O'Brien, William Smith, 1862-19481
- O'Shaughnessy, Louis1
- O'Shaughnessy, Mary Elizabeth, 1917-1
- O.J. Morrison Department Stores Company1
- Oak Grove Baptist Church1
- Oakes family1
- Ochs family1
- Ochsenhirt, Robert L. 1
- Office of Admissions1
- Office of the President9
- Office of the Vice President for Administration1
- Office of the Vice President for Student Affairs.1
- Ogden family2
- Ohio County Court1
- Ohio Valley Trades and Labor Assembly1