2. University of Pennsylvania, Oversize Ms. Codex 102 Title: Account book Author: Alamanno de' Medici Place: Florence Date: 1468-1488.
3. University of Pennsylvania, Oversize Ms. Codex 1209 Title: Account book Place: Toulouse Date: 1492-1494.
4. University of Pennsylvania, Oversize Ms. Codex 1504 Title: Account book Place: Italy Date: 1547-1551.
5. University of Pennsylvania, Ms. Codex 284 Title: Account book Author: Gisberto Orlandi Place: Italy Date: 1554-1620.
6. Science History Institute, MS 16 Title: Account book Place: England Date: 29 November 1855- 10 November 1864].