21. University of Pennsylvania, CAJS Rar Ms 510 DS ID: DS25879 Title: Memorial book Place: New York Date: 1930?-1950?
23. University of Pennsylvania, Halper 337 DS ID: DS25963 Title: Document Place: Old Cairo Date: 1020-1047??].
24. University of Pennsylvania, Halper 269 DS ID: DS25966 Title: Hebrew text Author: Yanai Date: 12th century-14th century?
25. University of Pennsylvania, Halper 425 DS ID: DS26010 Title: Letter Date: 12th century-13th century?