Former Owner
- I. C.1
- Imam Shamil1
- Initials, P. S., on Illustration 1 and on p. 1. Note on Flyleaf: Gift of Tho Addi Sammet M.D. in 1906.1
- Iodocus Grebel1
- Johannes zu Reitheim1
- John Frederick Lewis1
- John Henry Wrenn1
- John Ives1
- John Jarsey1
- John Kemp1
- John Topham1
- John Wallop, Viscount Lymington2
- Julien Peridier1
- Kavīndrācārya, approximately 1600-approximately 16751
- Kherḍe, Gaṇeśa Bhaṭṭa1
- Kherḍe, Kṛṣṇa Bhaṭṭa1
- Laurence Harman King-Harman1
- Lawrence J. Schoenberg1
- Leigh Baker1
- Louis Herbert Gray1