1. University of Pennsylvania, Ms. Codex 137 DS ID: DS1083 Title: Letters Author: John Dokeianos Date: [1550-1599?]
2. University of Pennsylvania, Ms. Codex 1591 DS ID: DS1421 Title: Letters Author: Poliziano Date: [circa 1511-1514]
3. University of Pennsylvania, Ms. Codex 853 DS ID: DS1695 Title: Letters Place: Italy Date: 1598-1612.