- Hymns, Latin (Medieval and modern)1
- Illumination of books and manuscripts, English1
- Illumination of books and manuscripts, Gothic1
- Illumination of books and manuscripts, Medieval1
- Illustrated works1
- In Coena Domini bulls1
- Inscriptions, Latin1
- Isabella I, Queen of Spain, 1451-15041
- Italian language1
- Italy--Bologna1
- Italy--Ferrara1
- Italy--Naples1
- James, the Greater, Saint1
- Jesus Christ1
- Jews1
- John, the Apostle, Saint1
- Justinian I, Emperor of the East, 483?-5651
- Kings and rulers1
- Laudatory poetry, Latin1
- Law1