251. University of Pennsylvania, Oversize Ms. Codex 764 Title: Commentary on Aristotle's Metaphysics Place: Germany Date: [14--]
252. University of Pennsylvania, Ms. Codex 765 Title: Organon Author: Aristotle Place: Italy Date: [between 1450 and 1499]
253. University of Pennsylvania, Ms. Codex 766 Title: Commentary on Aristotle's Physics Place: Germany Date: 1579.
254. University of Pennsylvania, Ms. Codex 767 Title: Commentary on Aristotle Place: Italy Date: [1400?]
255. University of Pennsylvania, Ms. Codex 768 Title: Commentary on De generatione et corruptione Place: Italy Date: [1550?]
256. University of Pennsylvania, Oversize Ms. Codex 76 Title: De sacramentis Author: William of Paris Place: Germany Date: [14--]
257. University of Pennsylvania, Oversize Ms. Codex 78 Title: Religious texts Place: Germany Date: [between 1400 and 1450]
258. University of Pennsylvania, Ms. Codex 79 Title: De misericordia Author: Laurentius Cynthius Place: Italy Date: [between 1475 and 1499]
259. University of Pennsylvania, Ms. Codex 7 Title: Disputations on physics Place: Italy Date: [between 1550 and 1599]
260. University of Pennsylvania, Oversize Ms. Codex 81 Title: Proceedings Author: Podestà of Perugia Place: Perugia Date: 1448-1449.