- Witchcraft1
- Women's clothing1
- Worcester, Charles Somerset, Earl of, approximately 1460-15261
- Worcester, William Somerset, Earl of, approximately 1525-15891
- World history1
- Wounds and injuries--Treatment1
- Writs1
- Ximenes de Ençiso family1
- Yalkut Shimoni1
- Yapp style bindings1
- Yaʻqūb ibn Khiḍr, d. 1480. ḥāshiyah ʻalá sharḥ Ṣadr al-Sharīʻah1
- Yemen (Republic)1
- Yeshivas1
- Zanjānī, ʻAbd al-Wahhāb ibn Ibrāhīm, fl. 1257. Taṣrīf al-ʻIzzī1
- Zoology1
- Zāhid, Aḥmad ibn Muḥammad, d. 1416. Hadīyat al-nāṣiḥ1
- abstracts (summaries)1
- academic dissertations1
- administrative records1
- agreements1