| Author | Titles | | 1.
| De Tommasi, Giambattista | 1 | | 2.
| De Tournefort, Joseph Pitton, 1656-1708 | 0 | | 3.
| Author is: Tournefort, Joseph Pitton de, 1656-1708 | 1 | | 4.
| De Tours, Constant, 1850-19-? | 0 | | 5.
| Author is: Constant de Tours, pseud. | 1 | | 6.
| De Trooz, Simone | 1 | | 7.
| De Troy, François, 1645-1730 | 0 | | 8.
| Author is: Troy, François de, 1645-1730 | 1 | | 9.
| De Vajay, Sigismond | 1 | | 10.
| De Valois, Ninette | 1 | | 11.
| De Valous, Guy | 1 | | 12.
| De Varigny, Henry | 1 | | 13.
| De Vecchi, Pierluigi | 9 |
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