21. University of Pennsylvania, Ms. Codex 1550 DS ID: DS1409 Title: Taxes Place: Florence Date: 1575.
22. University of Pennsylvania, Ms. Codex 1551 DS ID: DS1410 Title: Ledger Author: Alfonso Gondi Place: Florence Date: 1575.
23. University of Pennsylvania, Ms. Codex 466 DS ID: DS1535 Title: Letters Author: Pier Francesco Portinari Place: Florence Date: 1529.