Former Owner
- Phillip J. Pirages Fine Books & Manuscripts9
- Phoebe Hearst2
- Pierleone Leoni1
- Prince Augustus Frederick, Duke of Sussex1
- Prince Sadruddin Aga Khan4
- Pîrîzâde, Sayyid ʻAbd Allāh, Shaykh al-Islām1
- Qusṭanṭīn ibn Lūdūlf1
- Qāsim al-Īrawānī1
- Rashīdī, Ibrāhīm1
- Rashīdī, Ibrāhīm ibn Yūsuf6
- Richard James Horatio Gottheil1
- Robert Hoe III2
- Samuel William Ogg, Major-General1
- Saʻd Allāh ibn ʻĪsá Saʻdī Chalabī1
- Saʻīd ibn al-Shaykh Aḥmad1
- Schwohe, Johann Christian1
- Selim II1
- Sharīf Khān1
- Sherwood Waldron1
- Sir Isaac Goldsmid, 1st Baronet1