1. University of Pennsylvania, Ms. Codex 1271 DS ID: DS1001 Title: Opuscula Author: Thomas Aquinas Place: Paris and France Date: between 1269 and 1323
2. University of Pennsylvania, Ms. Coll. 591 Folder 20 DS ID: DS1773 Title: In libros De caelo et mundo Aristotelis Author: Thomas Aquinas Date: between 1275 and 1299.