1. University of Pennsylvania, Ms. Coll. 742 Folder 8 Title: Family documents Author: Piccolomini Date: 1278.
2. University of Pennsylvania, Ms. Coll. 764 Item 11 Title: Authorization of sale Author: Città di Castello Date: 1278.
3. Free Library of Philadelphia, Lewis E 1 Title: De amore Dei Author: Albertanus of Brescia and Leo Archpriest Place: Bologna Date: 1275-1299
4. Free Library of Philadelphia, Lewis E 9 Title: Processional Author: Catholic Church Place: Germany Date: 1450-1499, 1200-1299, and 900-999
5. Free Library of Philadelphia, Lewis E 15 Title: Organon Author: Aristotle Place: Italy Date: 1285-1299
9. Free Library of Philadelphia, Lewis E 35 Title: Bible commentary Author: Stephen Langton Place: Pontigny Date: 1220-1230