Former Owner
- John D. Stanitz1
- John Harvey Treat1
- John James Lewis1
- John Thomas Beer1
- Joseph Anton Koch1
- Joseph Barrois1
- Jāgeśvara1
- Jān Sipār Khān ibn Rustamdilkhān1
- Karbalāʼī Muḥammad Ḥusayn Qāsimʹābādī1
- Karva, Lakṣmaṇabhaṭṭa1
- Kenneth X. Robbins1
- Khiste, B.N1
- Kṛṣṇānanda Āgamavāgīśa Bhaṭṭācārya1
- Leo Olschki1
- Leonardo Loredan1
- Libreria antiquaria Mediolanum1
- Loftus Bland1
- Lohanī, Viṣṇudatta1
- Luigi Arrigoni1
- Luigi Cora1