The Stemmario Trivulziano dates back to the second half of the 15th century, and is attributed to Gian Antonio da Tradate, an artist by trade. This volume, which is conserved in the Biblioteca Trivulziana of Milan, documents approximately 2000 family and community coats of arms of the ancient Duchy of Milan, which at that time had reached the peak of its territorial extension. This prestigious edition is enhanced by the blazons of the well-known Swiss heraldic expert, Carlo Maspoli, who has also penned the introduction to the coats of arms and the deeds of the Visconti and the Sforza families, dukes of Milan.