21. University of Pennsylvania, Ms. Coll. 742 Folder 2 DS ID: DS1848 Title: Notarial document Author: Pietro Parenzi Date: 1239.
22. University of Pennsylvania, Ms. Coll. 742 Folder 30 DS ID: DS1849 Title: Notarial document Author: Rapolano Terme Date: 1431.
23. University of Pennsylvania, Ms. Coll. 742 Folder 34 DS ID: DS1853 Title: Notarial document Author: Università de' mercanti (Siena) Date: 1439.
24. University of Pennsylvania, Ms. Coll. 742 Folder 36 DS ID: DS1854 Title: Notarial document Author: Roman Catholic Archdiocese of Siena Date: 1456.