1. Columbia University Rare Book & Manuscript Library, MS X893 H532 DS ID: DS19082 Title: Ḥizuḳ ha-emunah Author: Isaac of Troki Place: undetermined Date: 17--
2. Columbia University Rare Book & Manuscript Library, MS X893 M855 DS ID: DS19934 Title: Hebrew texts Author: Nahmanides Place: undetermined Date: 17--