Michelangelo's correspondence has been published as Il carteggio di Michelangelo, posthumous edition by Giovanni Poggi, ed. Paola Barocchi and Renzo Ristori, Florence, 1983, 5 volumes. The letters from and about Cornelia are in volume 5. There are several related letters in the correspondence to and from members of Michelangelo's family, published as Il carteggio indiretto di Michelangelo, ed. Paola Barocchi, Kathleen Loach Bramante, and Renzo Ristori, Florence, 1995, volume 2.