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.