21. University of Pennsylvania, LJS 412 Title: Treatise on astronomy Place: Cairo Date: A.H. 950 (1543)
22. University of Pennsylvania, Oversize LJS 417 Title: Qānūn fī al-ṭibb Author: Avicenna Date: A.H. 899-904 (1494-1498)
23. University of Pennsylvania, LJS 426 Title: Qānūn fī al-ṭibb Author: Avicenna Place: Iran Date: [between 1375 and 1399?]
24. University of Pennsylvania, Oversize LJS 427 Title: Qānūn fī al-ṭibb Author: Avicenna Place: Persia Date: A.H. 989 (1581)
25. 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
26. University of Pennsylvania, LJS 436 Title: Ḍawʼ al-sirāj Author: Maḥmūd ibn Abī Bakr Faraḍī Date: A.H. 723-747 (1323-1347)
27. University of Pennsylvania, LJS 439 Title: Book on the configuration of the orb Author: Dunash ibn Tamim Place: Seville Date: [13--?]
28. 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)
29. University of Pennsylvania, LJS 444 Title: Ḥall al-Mūjiz Author: Muḥammad ibn Muḥammad Aqsarāʼī Date: A.H. 884 (1480)
30. University of Pennsylvania, Oversize LJS 447 Title: Masālik al-abṣār fī mamālik al-amṣār Author: Chihab al-Umari Place: Aleppo Date: 1710.