- Oglebay Park (Wheeling, W. Va.)--Periodicals.2
- Ohio Company (1747-1779)2
- Ohio County Medical Society (Wheeling, W. Va.)--Constitution.2
- Ohio Valley Academy of Dentistry--Congresses.2
- Ohio Valley College (Parkersburg, W. Va.) 2
- Oil and Gas Museum (Parkersburg, W. Va.)2
- Old Morgantown Glass Collectors' Guild (Morgantown, W. Va.)2
- Old Salt Sulphur Springs.2
- Order of United Commercial Travelers of America. District of Columbia Grand Council--Congresses.2
- Order of United Commercial Travelers of America. Kentucky Grand Council--Congresses.2
- Order of United Commercial Travelers of America. Maryland Grand Council--Congresses.2
- Order of United Commercial Travelers of America. Virginia Grand Council--Congresses.2
- Park View Inn (Berkeley Springs, W. Va.)2
- Parkersburg Art Center (Parkersburg, W. Va.)2
- Parkersburg High School (Parkersburg, W. Va.)--Curricula.2
- Parkersburg High School (Parkersburg, W. Va.)--Football.2
- Parkersburg Woman's Club (Parkersburg, W. Va.)--Periodicals. 2
- Phi Beta Kappa. West Virginia Alpha Chapter (West Virginia University) 2
- Phi Sigma Kappa. Delta Chapter (West Virginia University)--Periodicals.2
- Piedmont Airlines.2
