1. Columbia University Rare Book & Manuscript Library, MS X893 G15 DS ID: DS18556 Title: Hebrew texts Author: Shem Tov ben Abraham ibn Gaon Place: undetermined Date: 13--
2. Columbia University Rare Book & Manuscript Library, MS X893 G15 DS ID: DS18557 Title: Sefer Yeẓirah Place: undetermined Date: 13--