2. University of Pennsylvania, LJS 26 Title: Algorismus Author: Johannes de Sacrobosco Place: Italy Date: [between 1225 and 1275]
3. University of Pennsylvania, Oversize LJS 20 Title: Carta executoria de hidalguia a pedimiento Author: Spain Date: 1578
4. University of Pennsylvania, Oversize LJS 25 Title: Metaphysics Author: Aristotle Place: Italy Date: [1275-1299?]
6. University of Pennsylvania, LJS 225 Title: Litterarum simulationis liber Author: Michele Zopello Place: Rome Date: [between 1455 and 1458]
7. University of Pennsylvania, Oversize LJS 177 Title: Paludi Pontine Place: Italy Date: [1586-1760?]
8. University of Pennsylvania, LJS 23 Title: De natura rerum Author: Thomas of Cantimpré Place: France Date: [between 1250 and 1275]
9. University of Pennsylvania, Oversize LJS 19 Title: Carta executoria de hidalguia a pedimiento Author: Spain Date: 1553