| Author | Titles | 1.
| Powell, Earl N. | 2 | 2.
| Powell, Edgar, pseud. | 0 | 3.
| Author is: Amorim, António Guedes de, 1901-1979 | 24 | 4.
| Powell, Edward Alexander | 1 | 5.
| Powell, F. York, 1850-1904 | 1 | 6.
| Powell, G. | 1 | 7.
| Powell, Helen | 1 | 8.
| Powell, Ivor | 1 | 9.
| Powell, J. Enoch | 1 | 10.
| Powell, Jane Burman | 1 | 11.
| Powell, John | 1 |
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