42. University of Pennsylvania, LJS 494 Title: Sphaera mundi Author: Johannes de Sacrobosco Place: Italy Date: [between 1425 and 1450]
43. University of Pennsylvania, Oversize LJS 496 Title: Treatise on practical mathematical calculation Place: Italy Date: [between 1475 and 1499]
44. University of Pennsylvania, LJS 497 Title: Canones vel operationes in operando quadrante Place: Italy Date: [circa 1502]
45. University of Pennsylvania, LJS 498 Title: Tsurat ha-arets Author: Abraham bar Hiyya Place: Graz Date: [1542-1599?]
46. University of Pennsylvania, LJS 499 Title: Igeret orḥot ʻolam Author: Abraham ben Mordecai Farissol Place: Italy Date: [after 1525]
47. University of Pennsylvania, Oversize LJS 501 Title: Bāriʻ fī aḥkām al-nujūm Author: Haly Abenragel Place: England Date: [approximately 1320]
50. University of Pennsylvania, CAJS Rar Ms 228 Title: Los dos tratados del Papa Author: Cipriano de Valera Place: Spain Date: [after 1588]