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Subjects
- Paine, Samuel C. (Samuel Chandler), 1807-1888.1
- Parkman, George, 1790-1849.1
- Parrish, Isaac, 1811-1852.1
- Parry, C. C. (Charles Christopher), 1823-1890.1
- Pasteur, Louis, 1822-1895.1
- Paul, John Rodman, 1802-1877.1
- Peaslee, E. R. (Edmund Randolph), 1814-1878.1
- Peirce, John, 1836-1897.1
- Pendleton, James Murison, 1796-1832.1
- Pennsylvania7
- Pepper, George, 1841-1872.1
- Pepper, William, 1810-1864.1
- Pepper, William, 1843-1898.2
- Peru1
- Philadelphia46
- Physicians189
- Physicians, Women1
- Physick, Philip Syng, 1768-1837.1
- Physiology1
- Politics1