Creator
- Pitt, John A.1
- Pitts Theology Library, collector1
- Pittsburgh Courier Publishing Co.1
- Pittsburgh Home Photographer.1
- Pius, N. H.1
- Plaatje, Sol. T. (Solomon Tshekisho), 1876-1932.1
- Planet News Ltd.1
- Platen, Charles G.[?]2
- Platinachrome Co. (N.Y.)3
- Platt, Mac1
- Platt, Robert B.2
- Plaxco Printing Press (Sanford, Fla.)1
- Plecker & Maury (Lynchburg, Va.)1
- Plecker & Maury.1
- Plumbe, Samuel.1
- Plummer, David R.1
- Plummer, Harry L.1
- Plunkett.1
- Plyler-Brandon Sales Co. (Myrtle Beach, S.C.)1
- Pogue, P. C.1