- Notman (Montreal)1
- Odom, Hettie C.1
- Odom, Samuel J.--Correspondence.1
- Ogier, Thomas Louis, 1810-1900--Portraits.1
- Operas--Excerpts, Arranged1
- Orr, J. L. (James Lawrence), 1822-1873--Correspondence.1
- Palmetto State (Sloop)1
- Pawnee (Ship)1
- Payne, Lewis, 1845-1865--Portraits.1
- Penrose, William H., 1832-1903.1
- Perry, Mr. (William Hayne), 1839-1902--Correspondence.2
- Perry, Mr. (William Hayne), 1839-1902.1
- Petersburg Crater, Battle of, Va., 1864.1
- Pettigrew, James Johnston, 1828-1863--Portraits.1
- Pettigrew, James Johnston, 1828-1863.1
- Pettis, George H., fl. 1864--Correspondence.1
- Photograph albums.1
- Photographers--South Carolina--Beaufort.1
- Photographers--South Carolina--Photographs.1
- Poole, Isaac P.--Death and burial.1