The Trivulziano codex 642 is a paper volume created in the early sixteenth century probably in Milan, for personal reading purposes. At the end of a miscellany of humanistic writings and without original title (later added by another hand), we read Dante's Monarchy, a work condemned by the Church and therefore copied with prudence for interest of study. In fact, it is evident that the scribe received a mandate to pay great attention to the correctness of the text: during the transcription he left aside the words that were more difficult to read, and then went back to revising the entire work, integrating these passages and correcting other errors. , perhaps even with the help of a second reference specimen. Thanks to the accuracy of his work and the good model used, the code is one of the best witnesses of the Monarchy, sometimes of decisive importance for reconstructing the authentic words of the author.

This work, belonging to the permanent collection, is open to the public for conservation reasons only on the occasion of temporary exhibitions.