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]
15. University of Pennsylvania, Oversize LJS 252 Title: Physics (Aristotle) Author: Aristotle Date: circa 1300.
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: Dieta salutis Author: Guillaume de Lanicia Place: Šibenik Date: 1449-1453.
19. University of Pennsylvania, Oversize LJS 184 Title: Etymologiae 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]