1. University of Pennsylvania, Oversize LJS 124 Title: Speculum historiale Author: Vincent of Beauvais Date: ca. 1400.
3. University of Pennsylvania, Oversize LJS 212 Title: Manuscript leaf from expense records Date: 1380.
4. University of Pennsylvania, Oversize LJS 255 Title: De casibus virorum illustrium Author: Giovanni Boccaccio Date: 1425-1475
6. University of Pennsylvania, LJS 119 Title: Manuscript leaf from a collection of papal decretals Author: Catholic Church Date: 1300s.
7. University of Pennsylvania, LJS 226 Title: Certain astrological and astronomical figures Place: England Date: [1410?]
8. University of Pennsylvania, LJS 115 Title: Summa de poenitentia Author: Raymond of Penyafort Date: between 1225 and 1275.
9. University of Pennsylvania, Oversize LJS 322 Title: Fragments from Books III-V of Qānūn fī al-ṭibb. Author: Avicenna Date: [12--?]
11. University of Pennsylvania, LJS 35 Title: Decretales Gregorii IX Author: Catholic Church Date: between 1240 and 1260.
12. University of Pennsylvania, Oversize LJS 36 Title: Manuscript leaf from an account of the Jewish Wars, Date: 1100s.
13. University of Pennsylvania, Oversize LJS 391 Title: Kitāb al-Manṣūrī Author: Abu Bakr al-Razi Date: between 1200 and 1225?
14. University of Pennsylvania, LJS 395 Title: De proprietatibus rerum Author: Bartholomew Anglicus Date: 1200s.
16. University of Pennsylvania, LJS 460 Title: Elements Author: Euclid Place: Egypt Date: A.H. 502 (1108-1109)
18. University of Pennsylvania, LJS 492 Title: Medical miscellany Place: Spain Date: [between 1425 and 1475]
19. University of Pennsylvania, LJS 493 Title: Physics Author: Aristotle Date: between 1150 and 1175.
20. University of Pennsylvania, LJS 502 Title: De mysteriis Author: Ambrose Date: between 1075 and 1125?