Later this year Pontecorboli Editions will publish in Italian a definitive history of the family of Leonardo Da Vinci from his forebears to the present day, a masterwork of scholarship by Alessandro Vezzosi and Agnese Sabato. An English edition should appear in 2025. We post Jesse Ausubel’s Afterword in both languages as well as the draft table of contents. The books should form a major legacy of the Leonardo Da Vinci DNA Project.