1. University of Pennsylvania, LJS 54 Title: Cartulary Author: Magister Contarinus Place: Padua Date: [between 1227 and 1237]
2. University of Pennsylvania, Ms. Coll. 742 Folder 4 Title: Notarial documents Author: Siena Date: 1248.
3. University of Pennsylvania, Ms. Coll. 742 Folder 5 Title: Legal documents Author: Ildibrandinus Date: 1251.
4. University of Pennsylvania, Ms. Coll. 742 Folder 6 Title: Notarial documents Author: Piccolomo Oltremonti Date: 1254.
5. University of Pennsylvania, Ms. Coll. 742 Folder 8 Title: Family documents Author: Piccolomini Date: 1278.
6. University of Pennsylvania, Ms. Coll. 764 Item 11 Title: Authorization of sale Author: Città di Castello Date: 1278.
9. Free Library of Philadelphia, Lewis E 1 Title: De amore Dei Author: Albertanus of Brescia and Leo Archpriest Place: Bologna Date: 1275-1299
10. Free Library of Philadelphia, Lewis E 15 Title: Organon Author: Aristotle Place: Italy Date: 1285-1299