1. University of Pennsylvania, Ms. Codex 1237 DS ID: DS977 Title: Notarial documents Place: Piacenza Date: 1457-1546.
2. University of Pennsylvania, Ms. Codex 581 DS ID: DS1553 Title: Notarial document Place: Piacenza Date: 1580.
3. Cornell University, Archives 6532.04.02 DS ID: DS12240 Title: Notarial document Place: Piacenza and Italy Date: 1419 November.