Creator
- Ovington, Mary White, 1865-1951.2
- Owen, R.2
- Oxley, Harold.2
- Paddio Photo Studio (New Orleans, La.)2
- Palmetto Studios (Beaufort, S.C.)2
- Pan American Publishing Corp. (North Miami, Fla.)2
- Paramount Pictures, Inc.2
- Parkhurst, Charles H. (Charles Henry), 1831-1889.2
- Parsons.2
- Pasour, E. G.2
- Patrick, Kelly2
- Peace Photo (Philadelphia, Pa.)2
- Peck, George B., Jr. (George Bacheler), 1843-1934.2
- Pendleton's Lithography.2
- Pendleton, R. L.2
- Pendor Natural Color (Pearl River, N.Y.)2
- Penn Studio (Baltimore, Md.)2
- Peoples Drug Stores, inc.2
- Pettis, George H.2
- Philadelphia Post Card Co.2