1. Newberry Library, VAULT Case MS 101.1 DS ID: DS17863 Title: Letter Author: Lorenzo de' Medici Place: Florence Date: 1485 January 8.
2. Newberry Library, VAULT folio Case MS 150 DS ID: DS18203 Title: Indulgence and Letter Author: Catholic Church and Sixtus IV Place: Florence and Italy Date: 1481 April 25.