1. Columbia University Rare Book & Manuscript Library, MS X893.19 K71 no. 21 DS ID: DS18729 Title: Letter and Hebrew text Author: Karasik, Ber, active 19th century Place: Ukraine Date: 1865.
2. University of Pennsylvania, Halper 127 DS ID: DS25898 Title: Hebrew text Author: Isaac Alfasi Date: 13th century-16th century?