Former Owner
- Avraham ben ʻAlon1
- Aḥmad Rifʻat ibn al-Ḥājj Muḥammad Fākhir Z̤amāqavī1
- Aḥmad al-Mudarris1
- Aḥmad ibn Mubārak Luṭf Allāh1
- Aḥmad ibn Muṣṭafá1
- Aḥmad ibn ʻUmar Afandī1
- B.S. Cron1
- Baldassarre Boncompagni2
- Baptist Union Theological Seminary1
- Bartolomeo di Larione Martelli1
- Battista di Ser Cicco di Fermo1
- Baḥrānī, Muḥammad ibn ʻAlī ibn Ḥaydar ibn Ḥasan ibn Ḥaydar1
- Benediktinerinnenabtei St. Walburg1
- Benoît Le Court1
- Bentley Lyonel John Tollemache, 3rd Baron Tollemache1
- Bergendal Collection1
- Bernard M. Rosenthal1
- Bertram Ashburnham, 4th Earl of Ashburnham4
- Bet din tsedeḳ London ṿeha-medinah3
- Boies Penrose II1