- Porter, Ward F., 1917-2
- Porterfield, Allen Wilson, 1877-3
- Porterfield, Eugenia.1
- Porterfield, I. D. (Ira Deward), 1920-9
- Posey, Russell R.1
- Posey, Thomas E.1
- Poston, Jr., Adolph M.2
- Potomac (Washington, D. C.)1
- Potomac Edison Company.3
- Potomac Highland Outfitters (Junction, W. Va.)1
- Potomac Highland Travel Council (Burlington, W. Va.)1
- Potomac River Basin Consortium (Kensington, Md.)1
- Potomac State College of West Virginia University.8
- Potomac State College of West Virginia University. Mary F. Shipper Library. Learning Resource Center.2
- Potomac State College of West Virginia University. Office of Admissions.1
- Potomac State College. Counseling Center. 1
- Potomac State College. Library.1
- Potomac Valley Transit Authority (Petersburg, W. Va.)2
- Potter, H. Spencer.1
- Poultry report : chickens and eggs, production, disposition, and income (1974)1
