1. Columbia University Rare Book & Manuscript Library, MS X893 Ar41 DS ID: DS18846 Title: Philosophical text Author: Hunayn ibn Ishaq Place: undetermined Date: 14--?
2. Columbia University Rare Book & Manuscript Library, MS X893 F843 DS ID: DS18914 Title: Philosophical text Author: Yosef ben Moshe Ḳilṭi Place: undetermined Date: 15--?