1. Columbia University Rare Book & Manuscript Library, MS X893.153 Is3 DS ID: DS18538 Title: Legal text Author: Abū Isḥāq Ibrāhīm Muṣannif Place: undetermined Date: 1902.
2. Columbia University Rare Book & Manuscript Library, MS General 062 DS ID: DS19726 Title: Tefilot Place: undetermined Date: 1830.