4. University of Pennsylvania, LJS 293 Author: Abu Bakr al-Hassar Place: Baghdad Date: A.H. 590 (1194)
5. University of Pennsylvania, LJS 296 Author: Yaḥyá ibn Aḥmad Kāshānī Place: Isfahan Date: A.H. 720 (1320)
6. University of Pennsylvania, Oversize LJS 322 Title: Fragments from Books III-V of Qānūn fī al-ṭibb. Author: Avicenna Date: [12--?]
7. University of Pennsylvania, LJS 37 Title: Elements Author: Euclid Place: Egypt Date: A.H. 502 (1108-1109)
9. University of Pennsylvania, LJS 387 Title: al-Qāmūs al-muḥīṭ Author: Fairuzabadi Place: Iran Date: [between 1350 and 1450?]
10. University of Pennsylvania, LJS 388 Title: Mulakhkhaṣ fī al-hayʼah Author: Jaghmini Place: Iran Date: A.H. 786 (1384)
12. University of Pennsylvania, LJS 392 Title: Tafsīr al-Taḥrīr Author: Nizam al-Din al-Nisaburi Place: Iran Date: A.H. 813 (1411)
13. University of Pennsylvania, LJS 393 Title: Sharḥ Fusūl Ibuqrāṭ Author: Abū al-Qāsim ʻAbd al-Raḥmān ibn ʻAlī ibn Abī Ṣādiq al Nīsābūrī Place: Egypt Date: [between 1300 and 1399?]
14. University of Pennsylvania, LJS 394 Title: Ṣiḥāḥ Author: Ismail ibn Hammad al-Jawhari Place: Egypt Date: [13--?]
15. University of Pennsylvania, LJS 398 Title: Maqālah fī khalq al-insān Author: Saʻīd ibn Hibat Allāh ibn al-Ḥusayn Place: Syria Date: A.H. 689 (1290)
16. University of Pennsylvania, LJS 403 Title: Alchemical miscellany Author: Ibrāhīm al-Ḥusaynī Place: Herat Date: A.H. 901-904 (1496-1499)
17. University of Pennsylvania, LJS 405 Title: Tasʹhīl al-naẓar wa-taʻjīl al-ẓafar Author: Al-Mawardi Place: Egypt Date: [1250-1350?]
18. University of Pennsylvania, LJS 408 Title: Sharḥ al-Jaghmīnī Author: Qāḍī Zāda al-Rūmī Place: Samarkand Date: A.H. 830 (1427)
19. University of Pennsylvania, LJS 409 Title: Kitāb al-Kashf wa-al-bayān. Īḍāḥ al-rumūz fī al-burhān Date: [between 1600 and 1799?]
20. University of Pennsylvania, LJS 410 Title: Sharḥ al-Jaghmīnī Author: Qāḍī Zāda al-Rūmī Place: Iran Date: [between 1400 and 1599?]
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.
31. University of Pennsylvania, LJS 455 Title: Fawāʼid al-ḥabīb. Zinjār al-ḥukamāʼ Author: Abu ʻAbd Allāh Muḥammad ibn al-Bahāʼ Place: Egypt Date: [1400?]
32. University of Pennsylvania, LJS 456 Title: Secretum secretorum Place: Andalusia Date: A.H. 797 (1394)
33. University of Pennsylvania, LJS 459 Title: Secretum secretorum Place: Mosul Date: [between 1193 and 1211]
34. University of Pennsylvania, LJS 460 Title: Elements Author: Euclid Place: Egypt Date: A.H. 502 (1108-1109)
35. 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)
36. University of Pennsylvania, LJS 465 Title: Poem Author: Ibn Luyun Place: Spain Date: [13--?-14--?]
37. University of Pennsylvania, LJS 467 Title: Hādhā min Khawāṣs al-manāzil wa-hiya fī al-maghrib anwāʼ Place: North Africa Date: [13--?-15--?]
38. University of Pennsylvania, LJS 474 Title: Sharḥ al-Jaghmīnī Author: Qāḍī Zāda al-Rūmī Date: [between 1600 and 1799?]
39. University of Pennsylvania, Oversize LJS 478 Title: Kitāb fī istīʻāb al-wujūh al-mumkinah fī ṣanʻat al-asṭurlāb Author: Al-Biruni Date: A.H. 625 (1228)
40. University of Pennsylvania, Oversize LJS 481 Title: Ḥaṭṭ al-niqāb ʻan wujūh aʻmāl al-ḥisāb Author: Aḥmad ibn Ḥusayn Ibn al Qunfudh Place: Morocco Date: [between 14--? and 16--?]
41. University of Pennsylvania, Oversize LJS 486 Title: Kitāb Alghāz fī al-lughah al-ʻArabīyah Place: Egypt Date: A.H. 720 (1320)
42. University of Pennsylvania, LJS 495 Title: Kharīdat al-ʻajāʼib wa farīḍat al-gharāʼib Author: Sirāj al-Dīn Abū Ḥafṣ ʻUmar Ibn al-Wardī Date: [between 1450 and 1550?]
44. University of Pennsylvania, CAJS Rar Ms 125 Title: Ḥadīth Author: Ibrāhīm ibn ʻAlī Qalqashandī Date: A.H. 921 (1515)
45. University of Pennsylvania, CAJS Rar Ms 126 Title: Shifāʼ fī taʻrīf ḥuqūq al-Muṣṭafá Author: Qadi Ayyad Date: A.H. 831 (1428)
46. University of Pennsylvania, CAJS Rar Ms 132 Title: Devotional book Date: [between 1800 and 1899?]
47. University of Pennsylvania, CAJS Rar Ms 137 Title: Rawḍ al-rayāḥīn fī ḥikāyāt al-ṣāliḥīn Author: Abdullah bin Asaad Al-Yafi'i Place: A.H. 804 (1402) Date: 1402.
48. University of Pennsylvania, CAJS Rar Ms 142 Title: Muntahá al-irādāt fī jamʻ al-Muqniʻ maʻa al-Tanqīḥ wa-ziyādāt Author: Taqī al-Dīn Muḥammad ibn Aḥmad Ibn al-Najjār Date: [between 1600 and 1799?].
49. University of Pennsylvania, CAJS Rar Ms 143 Title: Hidāyah fī sharḥ al-Bidāyah Author: Burhan al-Din al-Marghinani Date: [between 1500 and 1699?]
50. University of Pennsylvania, CAJS Rar Ms 147 Title: Sharḥ Manār al-anwār fī uṣūl al-fiqh Author: ʻAbd al-Laṭīf ibn ʻAbd al-ʻAzīz ibn Malak Date: [between 1500 and 1699?]