Names
- Palace R.R. Photograph Car Co.1
- Palace R.R. Photograph Studio.1
- Paul’s Mammoth Travelling Photograph and Ferro-type Car.1
- Pearce, W. H.1
- Peirce, E. W.1
- Pennsylvania Railroad.1
- Peter & Kresge.1
- Peter, Lewis P.1
- Peters & Brother.1
- Pine, F. B.1
- Place, S.1
- Portable Picture Palace.1
- Potee, I. M.1
- Primrose, George M., 1841-1889.1
- Pullman Railroad Company.1
- Rector, W. H.1
- Robbins, Frank, 1846-1924.1
- Rockefeller, John D., III (John Davison), 1906-1978--Portraits.1
- Roebling, John A. (John Augustus), 1806-1869--Portraits.1
- Roebling, Washington Augustus, 1837-1926--Portraits.1