31. University of Pennsylvania, Halper 456 DS ID: DS25653 Title: Amulet Place: Istanbul and Italy Date: 14th century?
32. University of Pennsylvania, Halper 454 DS ID: DS25776 Title: Medical texts Date: 11th century-13th century?
33. University of Pennsylvania, Halper 447 DS ID: DS25854 Title: Medical texts Date: 11th century-12th century?