Authors: willis
- Penrose, Charles W. (Charles William) 1832-1925
- Pepperell, William -
- Pepper, William 1843-1898
- Perrin, William Gordon 1874-
- Peterson, William 1856-1921
- Petherick, Horace 1839-1919
- Petrie, W. M. Flinders (William Matthew Flinders) 1853-1942
- Petty, William, Sir 1623-1687
- Phelps, William Lyon 1865-1943
- Physick, N. W. (Nino William) 1890-1946
- Pickens, William 1881-1954
- Pickthall, Marmaduke William 1875-1936
- Picton, Harold W. (Harold Williams) 1867-
- Pierce, William J. 1829-
- Piercy, Willis Duff -
- Pierson, William Whatley, Jr. 1890-1966
- Piesse, G. W. Septimus (George William Septimus) 1820-1882
- Pilling, William 1834-
- Pinnock, William 1782-1843
- Pitcher, William J. C. 1858-1925
- Pittenger, William 1840-1904
- Pitt, William 1759-1806
- Planck, Willy 1870-1956
- Platt, William 1867-
- Platt, William, Mrs. -
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