Former Owner
- Aḥmad ibn Muḥammad ibn Ṣalāḥ al-Sharafī1
- Aḥmad ibn Muṣṭafá1
- Aḥmad ibn ʻUmar Afandī1
- Bahman Mirza Qajar1
- Basilica Gößweinstein1
- Baḥrānī, Muḥammad ibn ʻAlī ibn Ḥaydar ibn Ḥasan ibn Ḥaydar1
- Bern Dibner1
- Bhaṭṭaṃbhaṭṭa1
- Bibliotheca Philosophica Hermetica1
- Bonvesino, Marco1
- Brinton, Daniel G. 1837-18991
- Bristol Baptist College1
- Budapest University of Jewish Studies1
- Burg Kreuzenstein1
- Burndy Library1
- Bākīr ibn Muṣṭafá Fūṭī1
- Bīkānera Anūpa Saṃskr̥ta Pustakālaya1
- Būtū ʻAbd al-Bāqī1
- Carl Frederick Haussmann1
- Carleton Rubira Richmond1