Johann Christoph Friedrich Bach. Autograph letter signed to the publisher Breitkopf in Leipzig. Sotheby’s sale 05 Dec 2003 lot no.10. Creation dates: Undated
Lorenzo Da Ponte. Autograph letter signed in Italian to his friend Girolamo Perucchini in Venice. Sotheby’s sale 05 Dec 2003 lot no.61. Creation dates: Undated