- Glossaries, vocabularies, etc.1
- Gonzaga Colonna, Vespasiano, duca di Sabbioneta, 1531-15911
- Gothic (Medieval)1
- Greek literature--Translations into Latin1
- Gregory I, Pope, approximately 540-6041
- Hart, William, 15821
- Headbands1
- Hecuba, Queen of Troy1
- Heraldry1
- Hercules (Roman mythological character)1
- Horses1
- Household employees1
- Ildobrandini, Geronimo1
- Illegitimacy1
- Illinois--Chicago1
- Implicits (documents)1
- Inscriptions1
- Interfaith relations1
- Italy--Ancona1
- Italy--Castiglione della Pescaia1