Galileo’s Daughter quoted liberally from the 124 surviving letters that Suor Maria Celeste wrote to her famous father from the Convent of San Matteo in Arcetri, where she lived from age thirteen until her death. Unable to include all my translations in the text, I gave the full set to The Galileo Project.
It soon became apparent, however, that the people who most wanted to read all the letters did not want to read them on-line. The compromise was Letters to Father, which presented the original Italian with English translation on facing pages. Proceeds from the hardcover edition—a gorgeous, expensive volume, with real cloth covers and a ribbon bookmark—went to support the Poor Clares, the religious order to which both of Galileo’s daughters belonged. Although the hardcover is out of print, Letters to Father is still available (English text only) as a Penguin Classic.
British edition of the bi-lingual original, with a shortened title, To Father, and a different cover.