1. University of Pennsylvania, Ms. Codex 1293 DS ID: DS1023 Title: Ledger Place: Italy Date: 1568-1575.
2. University of Pennsylvania, Ms. Codex 1296 DS ID: DS1026 Title: Ledger Place: Italy Date: 1575-1580.
3. University of Pennsylvania, Ms. Codex 1297 DS ID: DS1027 Title: Ledger Place: Italy Date: 1575-1584.