1. Columbia University Rare Book & Manuscript Library, MS X893.19 M582 DS ID: DS18708 Title: Letter and Hebrew text Place: Greece Date: 18--[
2. Columbia University Rare Book & Manuscript Library, MS X893.19 M583 DS ID: DS19608 Title: Letter and Hebrew text Author: Yitsḥaḳ Firo Place: Iraq Date: 18--