21. University of Pennsylvania, LJS 115 Title: Summa de poenitentia Author: Raymond of Penyafort Date: between 1225 and 1275.
23. University of Pennsylvania, LJS 172 Title: Tabulae directionum et profectionum Author: Regiomontanus Date: 1476
24. University of Pennsylvania, Oversize LJS 280 Title: Decretales Gregorii IX Author: Catholic Church Place: France Date: [between 1250 and 1299]
25. University of Pennsylvania, Oversize LJS 285 Title: Decreto di banco feneratitio, Author: Francesco III Gonzaga, Duke of Mantua Date: 1542.
26. University of Pennsylvania, LJS 304 Title: Dogale Author: Alvise I Mocenigo Place: Venice Date: 1574.
27. University of Pennsylvania, LJS 342 Title: Copies of documents relating to water rights in Milan. Author: Duchy of Milan Place: Milan Date: [after 1444]
28. University of Pennsylvania, LJS 347 Title: De consolatione philosophiae Author: Boethius Place: England Date: [between 1300 and 1350?]
29. University of Pennsylvania, Oversize LJS 359 Title: Qānūn fī al-ṭibb Author: Avicenna Place: England Date: [between 1250 and 1299]
30. University of Pennsylvania, LJS 35 Title: Decretales Gregorii IX Author: Catholic Church Date: between 1240 and 1260.