- Hymns, French1
- Hymns, German1
- Illumination of books and manuscripts, English1
- Illumination of books and manuscripts, Mexican1
- Illumination of books and manuscripts, Mosan1
- Illumination of books and manuscripts, Renaissance1
- Immortality--Christianity1
- In Coena Domini bulls1
- Incarnation1
- Incunabula1
- Indians of Mexico--Legal status, laws, etc.1
- Indians of South America--Legal status, laws, etc.1
- Indians, Treatment of1
- Inheritance and succession1
- Ink1
- Inner Light1
- Inquisition1
- Inspiration1
- Introductions1
- Investiture (Feudal law)1