| Author | Titles | | 1.
| Castro, Alfredo Simões de, 1886-1917 | 1 | | 2.
| Castro, Alice | 1 | | 3.
| Castro, Almerindo Martins de | 1 | | 4.
| Castro, Álvaro de | 3 | | 5.
| Castro, Américo, 1885-? | 5 | | 6.
| Castro, Amilcar de, 1920- | 2 | | 7.
| Castro, Amilcar Ferreira de | 4 | | 8.
| Castro, Ana de, 1966- | 2 | | 9.
| Castro, Ana M. Coutinho e | 1 | | 10.
| Castro, Ana Maria Craveiro Pereira de | 1 |
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