11. University of Pennsylvania, Ms. Codex 1516 DS ID: DS1387 Title: Ledger Author: Bernardo Antonio de' Medici Place: Florence Date: 1456-1457.
12. University of Pennsylvania, Ms. Codex 1524 DS ID: DS1394 Title: Ledger Place: Florence Date: 1581-1583.
13. University of Pennsylvania, Ms. Codex 1550 DS ID: DS1409 Title: Taxes Place: Florence Date: 1575.