21. University of Pennsylvania, LJS 436 Title: Ḍawʼ al-sirāj Author: Maḥmūd ibn Abī Bakr Faraḍī Date: A.H. 723-747 (1323-1347)
22. University of Pennsylvania, LJS 439 Title: Book on the configuration of the orb Author: Dunash ibn Tamim Place: Seville Date: [13--?]
23. 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)
24. University of Pennsylvania, LJS 444 Title: Ḥall al-Mūjiz Author: Muḥammad ibn Muḥammad Aqsarāʼī Date: A.H. 884 (1480)
25. University of Pennsylvania, Oversize LJS 447 Title: Masālik al-abṣār fī mamālik al-amṣār Author: Chihab al-Umari Place: Aleppo Date: 1710.
26. University of Pennsylvania, LJS 455 Title: Fawāʼid al-ḥabīb. Zinjār al-ḥukamāʼ Author: Abu ʻAbd Allāh Muḥammad ibn al-Bahāʼ Place: Egypt Date: [1400?]
27. University of Pennsylvania, LJS 456 Title: Secretum secretorum Place: Andalusia Date: A.H. 797 (1394)
28. University of Pennsylvania, LJS 459 Title: Secretum secretorum Place: Mosul Date: [between 1193 and 1211]
29. University of Pennsylvania, LJS 460 Title: Elements Author: Euclid Place: Egypt Date: A.H. 502 (1108-1109)
30. University of Pennsylvania, LJS 464 Title: Taḥṣīl al-munā fī sharḥ Talkhīṣ Ibn al-Bannāʼ Author: Abū ʻAbd al-Raḥmān Yaʻqūb ibn Ayyūb Mawāhidī Place: Granada Date: A.H. 849 (1445)