1. Columbia University Rare Book & Manuscript Library, MS X893 M587 DS ID: DS19733 Title: Derashot Place: Turkey Date: 18--
2. Columbia University Rare Book & Manuscript Library, MS X893 L55 DS ID: DS19771 Title: Derashot Author: Yitsḥaḳ ben Daṿid Leon Place: Turkey Date: 1585.