2. University of Pennsylvania, Oversize LJS 16 Title: Speculum historiale Author: Vincent of Beauvais Date: 1400
3. University of Pennsylvania, Oversize LJS 211 Title: Roger Bigod deed Author: Roger Bigod, 2nd Earl of Norfolk Date: ca. 1201-1205.
4. University of Pennsylvania, Oversize LJS 124 Title: Speculum historiale Author: Vincent of Beauvais Date: ca. 1400.
5. University of Pennsylvania, LJS 26 Title: Algorismus Author: Johannes de Sacrobosco Place: Italy Date: [between 1225 and 1275]
6. University of Pennsylvania, Oversize LJS 20 Title: Carta executoria de hidalguia a pedimiento Author: Spain Date: 1578
7. University of Pennsylvania, Oversize LJS 25 Title: Metaphysics Author: Aristotle Place: Italy Date: [1275-1299?]
9. University of Pennsylvania, LJS 225 Title: Litterarum simulationis liber Author: Michele Zopello Place: Rome Date: [between 1455 and 1458]
10. University of Pennsylvania, Oversize LJS 177 Title: Paludi Pontine Place: Italy Date: [1586-1760?]
11. University of Pennsylvania, LJS 23 Title: De natura rerum Author: Thomas of Cantimpré Place: France Date: [between 1250 and 1275]
13. University of Pennsylvania, Oversize LJS 19 Title: Carta executoria de hidalguia a pedimiento Author: Spain Date: 1553
15. University of Pennsylvania, Oversize LJS 24 Title: Medical miscellany Author: Isaac Israeli ben Solomon Place: Paris Date: [between 1225 and 1275]
17. University of Pennsylvania, Oversize LJS 212 Title: Manuscript leaf from expense records Date: 1380.
18. University of Pennsylvania, Oversize LJS 255 Title: De casibus virorum illustrium Author: Giovanni Boccaccio Date: 1425-1475
21. University of Pennsylvania, LJS 119 Title: Manuscript leaf from a collection of papal decretals Author: Catholic Church Date: 1300s.
22. University of Pennsylvania, Oversize LJS 184 Title: Etymologies Author: Isidore of Seville Place: Catalonia Date: [between 1265 and 1299]
23. University of Pennsylvania, LJS 216 Title: Sphaera mundi Author: Johannes de Sacrobosco Place: Paris Date: [between 1256 and 1270]
24. University of Pennsylvania, LJS 226 Title: Certain astrological and astronomical figures Place: England Date: [1410?]
27. University of Pennsylvania, LJS 194 Title: Geometry Author: Sylvester II Place: Austria Date: [between 1125 and 1175]
28. University of Pennsylvania, LJS 267 Title: De ludo schacchorum seu de moribus hominum et officiis nobilium ... etc Date: 1409
29. University of Pennsylvania, LJS 198 Title: De simplicibus Author: Arnaldus de Villa Nova Place: Spain Date: [between 1350 and 1380]
30. University of Pennsylvania, LJS 115 Title: Summa de poenitentia Author: Raymond of Penyafort Date: between 1225 and 1275.
32. University of Pennsylvania, LJS 172 Title: Tabulae directionum et profectionum Author: Regiomontanus Date: 1476
33. University of Pennsylvania, Oversize LJS 266 Title: La generacion de Adam Place: France Date: [between 1440 and 1460?]
34. University of Pennsylvania, Oversize LJS 280 Title: Decretales Gregorii IX Author: Catholic Church Place: France Date: [between 1250 and 1299]
35. University of Pennsylvania, Oversize LJS 285 Title: Decreto di banco feneratitio, Author: Francesco III Gonzaga, Duke of Mantua Date: 1542.
36. University of Pennsylvania, LJS 289 Title: Algorismus Place: Italy Date: [between 1450 and 1475?]
37. University of Pennsylvania, Oversize LJS 28 Title: Atlas Author: Battista Agnese Place: Venice Date: [between 1535 and 1538]
38. University of Pennsylvania, LJS 29 Title: Extratto da un libro de razza da cavalli del re Ferrante vechio de Aragona. Author: Ferdinand I of Naples Place: Venice Date: 1541.
39. University of Pennsylvania, LJS 304 Title: Dogale Author: Alvise I Mocenigo Place: Venice Date: 1574.
40. University of Pennsylvania, LJS 342 Title: Copies of documents relating to water rights in Milan. Author: Duchy of Milan Place: Milan Date: [after 1444]
41. University of Pennsylvania, LJS 347 Title: De consolatione philosophiae Author: Boethius Place: England Date: [between 1300 and 1350?]
42. University of Pennsylvania, Oversize LJS 359 Title: Qānūn fī al-ṭibb Author: Avicenna Place: England Date: [between 1250 and 1299]
43. University of Pennsylvania, LJS 35 Title: Decretales Gregorii IX Author: Catholic Church Date: between 1240 and 1260.
45. University of Pennsylvania, Oversize LJS 36 Title: Manuscript leaf from an account of the Jewish Wars, Date: 1100s.
46. University of Pennsylvania, LJS 379 Title: Edicts concerning jews Author: Ferdinando I de' Medici Place: Florence Date: [after 1593]
47. University of Pennsylvania, LJS 380 Title: Pros mathēmatikous Author: Sextus Empiricus Place: Italy Date: [between 1430 and 1450]
48. University of Pennsylvania, LJS 381 Title: Crispi Sallustii de Catheline conjuracione liber ; Jugurtinum bellum eiusdem. Author: Sallust Place: Padua Date: [between 1455 and 1465?]
49. University of Pennsylvania, LJS 382 Title: Alchemical miscellany Author: Georg Hayniger Place: Vienna Date: [circa 1476]
50. University of Pennsylvania, LJS 384 Title: Philosophia mundi Author: William of Conches Place: Germany Date: [circa 1150]