- 6 P. & F. Corbin (Firm)
- 1 P. Brous & Co. (Firm)
- 1 P. Goumas & Co.
- 3 P. Ipsen (Firm)
- 1 P. Lenoir (Firm)
- 1 P.H. & F.M. Roots
- 4 P.H. Kelly Construction Company
- 1 P.H. Mayo & Bro.
- 1 P.N. Degerberg Tailor
- 3 Pacific Guano Company
- 7 Pacific Guano Company's Pavilion
- 1 Pacific Mills
- 1 Pacific Ocean
- 3 Packard
- 9 Packer Avenue
- 9 Packer Park, Pennsylvania
- 1 Packer, Asa, 1805-1879
- 7 Packets (watercraft)
- 1 Packing material
- 4 Packing plants
- 2 Packs of cards
- 1 Paddington Station, London
- 22 Paddle steamers
- 1 Padlocks
- 1 Padua, Italy
- 1 Page, James (1795-1875)
- 2 Pages & Co.
- 19 Pagodas
- 1 Paillard & Co.
- 6 Pails
- 1 Paine, Schering, & Glatz
- 3 Paine, Thomas, 1737-1809
- 6 Paint
- 3 Paint industry
- 1 Paint shops
- 2 Painters (artists)
- 1 Painting (image-making)
- 63 Paintings
- 5 Paints & varnishes
- 1 Palace of Justice
