- 2 Pierce Butler Mansion
- 4 Pierce, May S.
- 1 Pierce-Arrow Motor Car Company
- 2 Piercy Blue Brick Works
- 1 Pierry Schaltin & Co.
- 35 Piers
- 1 Pies
- 11 Pietism
- 1 Pig houses
- 3 Pigeons (general term)
- 29 Pilasters
- 6 Pilate, Pontius, 1st cent.
- 1 Pilate, Pontius, 1st cent. - Dream of Wife
- 1 Pilgrimages
- 6 Pilgrims
- 2 Pillars
- 3 Pilling's Print & Dye Works
- 11 Pillows
- 3 Pills
- 1 Pillsbury, Charles A., & Co.
- 1 Pilot boats
- 1 Pim Brothers & Co.
- 1 Pin industry
- 1 Pinch, Miss Ruth (Fictitious character)
- 7 Pinchot, Gifford, 1865-1946
- 1 Pine cones
- 31 Pine Street
- 1 Pine Street Market
- 1 Pine Street Presbyterian Church
- 1 Pine, Robert Edge, 1720-1788
- 2 Pines
- 1 Pinkney, William, 1764 - 1822
- 6 Pins (fasteners)
- 2 Pioneer Suspender Co. (Firm)
- 1 Pioneers
- 1 Piper, Reverend Henry Hunt
- 2 Piper's Mill
- 6 Pipes (Conduits)
- 7 Pipes (Musical instruments)
- 5 Pipes (smoking equipment)
