1. University of Pennsylvania, Oversize LJS 16 Title: Speculum historiale Author: Vincent of Beauvais Date: 1400
2. University of Pennsylvania, Oversize LJS 211 Title: Roger Bigod deed Author: Roger Bigod, 2nd Earl of Norfolk Date: ca. 1201-1205.
3. University of Pennsylvania, Oversize LJS 124 Title: Speculum historiale Author: Vincent of Beauvais Date: ca. 1400.
4. University of Pennsylvania, LJS 26 Title: Algorismus Author: Johannes de Sacrobosco Place: Italy Date: [between 1225 and 1275]
5. University of Pennsylvania, Oversize LJS 25 Title: Metaphysics Author: Aristotle Place: Italy Date: [1275-1299?]
7. University of Pennsylvania, LJS 236 Title: Thesaurus pauperum Author: John XXI Place: Italy Date: [1450-1499?]
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 231 Title: Statutum habelle communum et terrarum Barge Date: 1346
11. University of Pennsylvania, LJS 23 Title: De natura rerum Author: Thomas of Cantimpré Place: France Date: [between 1250 and 1275]
14. 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, LJS 119 Title: Manuscript leaf from a collection of papal decretals Author: Catholic Church Date: 1300s.
18. University of Pennsylvania, Ms. Codex 88 Title: Diaeta salutis Author: Guillaume de Lanicia Place: Šibenik Date: 1449-1453.
19. University of Pennsylvania, Oversize LJS 184 Title: Etymologies Author: Isidore of Seville Place: Catalonia Date: [between 1265 and 1299]
20. University of Pennsylvania, LJS 216 Title: Sphaera mundi Author: Johannes de Sacrobosco Place: Paris Date: [between 1256 and 1270]
21. University of Pennsylvania, LJS 265 Title: Ruralia commoda Author: Pietro de' Crescenzi Date: 1464
22. University of Pennsylvania, LJS 226 Title: Certain astrological and astronomical figures Place: England Date: [1410?]
23. University of Pennsylvania, LJS 194 Title: Geometry Author: Sylvester II Place: Austria Date: [between 1125 and 1175]
24. University of Pennsylvania, LJS 267 Title: De ludo schacchorum seu de moribus hominum et officiis nobilium ... etc Date: 1409
25. University of Pennsylvania, LJS 198 Title: De simplicibus Author: Arnaldus de Villa Nova Place: Spain Date: [between 1350 and 1380]
26. University of Pennsylvania, LJS 115 Title: Summa de poenitentia Author: Raymond of Penyafort Date: between 1225 and 1275.
28. University of Pennsylvania, Oversize LJS 174 Title: Alphonsine tables Place: Prague Date: 1401-1404.
30. University of Pennsylvania, LJS 172 Title: Tabulae directionum et profectionum Author: Regiomontanus Date: 1476
31. University of Pennsylvania, Oversize LJS 224 Title: Expositio in libros Posteriorum Aristotelis Author: Paul of Venice Place: Verona Date: [between 1425 and 1475]
34. Conception Abbey and Seminary, CA 19 Title: Decretals of Gregory IX, commentary on Place: undetermined
35. Conception Abbey and Seminary, CA 35 Title: Meteorologica Author: Aristotle Place: France Date: s. XIV, 1300-1399
43. Conception Abbey and Seminary, CA 20 Title: Collectarium Place: Switzerland Date: s. XII, 1100-1199