- Pierpont Morgan Library. Gilder Lehman Collection.1
- Pike County Citizens Association (Ky.)1
- Pike County Convention and Visitors Bureau (Waverly, Ohio)1
- Pilgrim Glass Corporation (Ceredo, W. Va.)1
- Pillsbury Company.1
- Pillsbury Mills (Minneapolis, Minn.)1
- Pinnickinnick Players (Clarksburg, W. Va.)1
- Pioneer Press of West Virginia.1
- Pittsburgh Regional Library Center (Pittsburgh, Pa.)1
- Pittsburgh and Connellsville Railroad Company.1
- Pittsburgh and West Virginia Coal Company.1
- Pittsburgh, Cincinnati, and St. Louis Railway Company.1
- Pittsburgh, Fort Wayne and Chicago Railway Company.1
- Planned Parenthood Health Systems.1
- Pleasant Hill Public School (Monongalia County, W. Va.)1
- Pleasants County Teachers' Association (W. Va.)1
- Pocahontas Coal and Coke Company.1
- Pocahontas Coalfield Centennial Celebration, Inc.1
- Pocahontas County Tourism Commission (Marlinton, W. Va.)1
- Pocahontas Development Company (Grafton, W. Va.)1
