P
- Pagodas. (1)
- Paintings. (74)
- Paneling. (1)
- Paper industry. (19)
- Parades & processions. (2)
- Parks. (85)
- Patios. (1)
- Peddlers. (5)
- Perfume stores. (19)
- Pharmaceutical industry. (380)
- Photograph albums. (704)
- Photography stores. (12)
- Photomechanical prints. (2)
- Picnics. (1)
- Piers & wharves. (2)
- Pines. (15)
- Planetaria. (5)
- Plantations. (22)
- Plants. (94)
- Plaques. (3)
- Plastics industry. (21)
- Playgrounds. (5)
- Plazas. (11)
- Plumbing fixtures. (2)
- Police stations. (2)
- Political organizations. (27)
- Portrait paintings. (12)
- Portrait photographs. (374)
- Post offices. (29)
- Power plants. (90)
- Prefabricated buildings. (7)
- Presbyterian churches. (93)
- Printers' unions. (5)
- Printing industry. (5)
- Prints. (715)
- Prison facilities. (1)
- Protestant churches. (30)
- Public utility companies. (256)
- Publishing industry. (54)
- Puerto Rico--San Juan. (16)
- Puerto Rico--Vega Baja. (13)