11. University of Pennsylvania, Ms. Coll. 742 Folder 6 DS ID: DS1891 Title: Notarial document Author: Piccolomo Oltremonti Date: 1254.
12. University of Pennsylvania, Ms. Coll. 742 Folder 9 DS ID: DS1920 Title: Notarial document Author: Podestà of Monticchiello (Italy) Date: 1293.