1. Princeton University, Islamic Manuscripts Garrett no. 4263Y DS ID: DS28238 Title: Rasāʼil Author: Brethren of Purity Place: Damascus Date: 1551
2. Princeton University, Islamic Manuscripts Garrett no. 4059Y DS ID: DS28358 Title: Rasāʼil Author: Muḥammad ibn Aḥmad ʻAmīdī Date: 1832