- Illumination of books and manuscripts, Italian9
- Illumination of books and manuscripts, Medieval12
- Illumination of books and manuscripts, Mexican1
- Illumination of books and manuscripts, Mosan1
- Illumination of books and manuscripts, Renaissance6
- Illumination of books and manuscripts, Russian2
- Illumination of books and manuscripts, Thai6
- Illumination of books and manuscripts, Turkish3
- Illumination of books and manuscripts--Technique1
- Illusion (Philosophy)2
- Illustrated works41
- Ilāhʹābādī, Muḥibb Allāh. Taswīyah1
- Ilāhʹābādī, ʻAbd Allāh ibn Shihāb. Sharḥ ʻalá ḍābiṭat sharāʼiṭ al-ashkāl al-arbaʻah li-Tahdhīb al-manṭiq1
- Imaginary letters1
- Imamate14
- Imams (Shiites)40
- Imams (Shiites)--Biography2
- Immortality1
- Immortality--Christianity1
- Immortality--Islam2