- Hymns, Latin (Medieval and modern)15
- Hymns, Syriac2
- Iceland1
- Idra rabba1
- Idra zuta1
- Ildephonsus, Saint, approximately 610-6671
- Ildobrandini, Geronimo1
- Illegible markings1
- Illinois--Chicago25
- Illumination of books and manuscripts61
- Illumination of books and manuscripts, Carolingian1
- Illumination of books and manuscripts, Ethiopian1
- Illumination of books and manuscripts, Flemish3
- Illumination of books and manuscripts, French8
- Illumination of books and manuscripts, German2
- Illumination of books and manuscripts, Gothic17
- Illumination of books and manuscripts, Italian3
- Illumination of books and manuscripts, Medieval8
- Illumination of books and manuscripts, Renaissance1
- Illustrated works3