41. University of Pennsylvania, LJS 434 Title: Jadāvil-i ikhtiyārāt Place: Iran Date: approximately A.H. 912 (1507)
42. University of Pennsylvania, LJS 435 Title: Maqālah fī al-ʻamal bi-al-yad Author: Abu al-Qasim al-Zahrawi Place: A.H. 869 (1464) Date: 1464
43. University of Pennsylvania, LJS 436 Title: Ḍawʼ al-sirāj Author: Maḥmūd ibn Abī Bakr Faraḍī Date: A.H. 723-747 (1323-1347)
44. University of Pennsylvania, LJS 437 Title: Circa instans Author: Matthaeus Platearius Place: Germany Date: [1400?]
45. University of Pennsylvania, LJS 438 Title: Neoplatonic translations Author: Platonic Academy Place: Florence Date: [circa 1475]
46. University of Pennsylvania, LJS 439 Title: Book on the configuration of the orb Author: Dunash ibn Tamim Place: Seville Date: [13--?]
47. University of Pennsylvania, LJS 43 Title: Poetry Author: Qasem-e Anvar Place: Iran Date: [between 1550 and 1599]
48. University of Pennsylvania, LJS 441 Title: Miṣbāḥ fī ʻilm al-miftāḥ fī al-ḥikmah al-Ilāhīyah wa-al-ṣināʻah al-ḥikmīyah Author: Al-Jaldaki Place: Aleppo Date: A.H. 970 (1562)
49. University of Pennsylvania, Oversize LJS 442 Title: Buch von den probierten Künsten Author: Franz Helm Place: Bavaria Date: [between 1585 and 1599?]
50. University of Pennsylvania, LJS 443 Title: Collection of texts on the calendar Place: Armenia Date: [after 1416]