- Parkman, Samuel, 1816-18541
- Parkman, Samuel, 1816-1854, author1
- Parrish, Edward, 1822-18722
- Parrish, Joseph, 1818-18911
- Parsons, Charles W. (Charles William), 1823-18931
- Parsons, John A.1
- Parsons, Usher, 1788-18683
- Patterson, Henry S. (Henry Stuart), 1815-18541
- Patterson, M. A.1
- Paul, James, 1798-18521
- Payne, W. E. (William E.), 1815-1
- Peabody, Elizabeth Palmer, 1804-18941
- Pearson, Clement, b. 18191
- Pease, Calvin, 1813-18631
- Peaslee, E. R. (Edmund Randolph), 1814-18785
- Peaslee, E. R. (Edmund Randolph), 1814-1878 author1
- Peaslee, E. R. (Edmund Randolph), 1814-1878, author1
- Peebles, J. F.1
- Peet, Harvey Prindle, 1794-18731
- Peirce, C. H. (Charles Henry), 1814-18551