Creator
- O Studio.1
- O'Neil, Bill.1
- O. Pierre Havens.1
- Ogden, Woody.1
- Oklahoma Card Co. (Oklahoma City, Okla.)1
- Osborne Publ. Co. (New York, N.Y.)1
- Oster, Harry.1
- Out-Door Photography.1
- Overly, Charles H.1
- Pan American Color Pub. (Miami, Fla.)1
- Parsons.1
- Paul C. Koeber Co.1
- Payne, Robert.1
- Peace Photo (Philadelphia, Pa.)1
- Peace Photo.1
- Penn Park Studio (York, Pa.)1
- Penn Photo Studio1
- Peoples Studio (Birmingham, Ala.)1
- Pereira & Co., Ltd. (Trinidad)1
- Perry & Co. (Cape Town, South Africa)1