- Torto, Antonio del1
- Torto, Francesco del1
- Toxins1
- Tract verses1
- Traditional medicine--Formulae, receipts, prescriptions1
- Tragedies (Seneca, Lucius Annaeus)1
- Tranchedini, Nicodemo, 1413-14811
- Transubstantiation1
- Travel--Taxation1
- Treasure bindings1
- Tree calf bindings1
- Trenta, Francesco1
- Treviso (Italy). Podestà1
- Trials (Murder)1
- Trials (Poisoning)1
- Trigonometry1
- Trimmed edges1
- Trinity--History of doctrines1
- Tucci, Niccolò, 1908-19991
- Turenne, Antoine de La Tour d'Auvergne, vicomte de1