1. Columbia University Rare Book & Manuscript Library, MS X893 Z8 v.2 no.9 DS ID: DS18576 Title: Letter and Hebrew text Author: Avraham Ben-Yosef Place: undetermined Date: 1824.
2. Columbia University Rare Book & Manuscript Library, MS X893 M6865 DS ID: DS19174 Title: Letter and Hebrew text Place: undetermined Date: 18--