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- Paine, Martyn, 1794-1877, author1
- Parsons, Usher, 1788-18681
- Patterson, Henry S. (Henry Stuart), 1815-18541
- Perkins, Joseph, 1798-18721
- Pope, Charles A. (Charles Alexander), 1818-18701
- Post, Alfred C. (Alfred Charles), 1806-18861