1. University of Pennsylvania, Ms. Coll. 742 Folder 20 DS ID: DS1838 Title: Notarial document Author: Siena Date: 1374.
2. University of California, Berkeley, BANC MS UCB 194 DS ID: DS12566 Title: Notarial document Place: Lombardy Date: 1390
3. University of California, Berkeley, BANC MS UCB 171 DS ID: DS12703 Title: Notarial document Date: 1311-1663].