- 2 Polytechnic College
- 4 Polytechnics (buildings)
- 4 Pomegranates
- 1 Pomological Building, Agricultural Annex
- 1 Pompeian Lady.
- 3 Pompeian plate
- 11 Pompeii, Italy
- 21 Ponds
- 2 Pontiac, Michigan
- 8 Pontificals
- 1 Pontoon bridges
- 1 Pool tables
- 1 Poole, Clara
- 1 Poole, Eliza, b. 1820
- 1 Poole, John, 1786?-1872
- 4 Pools
- 54 Poor
- 3 Poor laws
- 9 Poorhouse see Almshouses (buildings)
- 1 Pooteeloff Iron Works
- 4 Pop (fine arts styles)
- 6 Popcorn
- 4 Pop-Corn Stand
- 16 Popes
- 24 Poplar
- 2 Poplar Street
- 1 Poplars
- 1 Popularity
- 14 Poquessing Creek, Pennsylvania
- 46 Porcelain
- 4 Porcelain enamel
- 1 Porcelain makers
- 32 Porches
- 1 Porcupines
- 4 Pork
- 2 Port Hueneme, California
- 1 Port Kennedy Slag Works, The
- 5 Port Providence, Pennsylvania
- 1 Port Richmond Funeral Supply Co., Inc. (caskets)
- 1 Port Richmond Ice Cream Garden
