1. University of Pennsylvania, Ms. Codex 1089 Title: Records Place: Rheinhessen-Pfalz Date: 1511-1527.
2. University of Pennsylvania, Oversize Ms. Codex 1353 Title: Ledger Author: Niccolo de Medici Place: Italy Date: 1567-1590.
3. University of Pennsylvania, Ms. Codex 1420 Title: Ledger Author: Bartolomeo di Stefano Place: Italy Date: 1514-1522.