1. Jewish Theological Seminary of America, MS NH23 DS ID: DS16375 Title: Letter Author: Gonzalo Fernández de Córdoba Place: Naples Date: 1504.
2. Newberry Library, VAULT folio Case MS 5170 DS ID: DS17716 Title: Letter Author: Francesco I de' Medici Place: Italy and Ferrara Date: 1559 [that is, 1560] Feb. 22.