| Author | Titles | | 1.
| Trapiello, Guillermo | 1 | | 2.
| Trapier, Blanche | 1 | | 3.
| Trapier, Elizabeth du Gué | 4 | | 4.
| Trapier, Stéphane | 1 | | 5.
| Trapietto, Andres, 19--- | 1 | | 6.
| Trapmore, Alison | 1 | | 7.
| Trapo, Juan | 1 | | 8.
| Trapp, Eugen | 1 | | 9.
| Trapp, Frank Anderson | 2 | | 10.
| Traquair, Ramsay, 1874-1952 | 1 |
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