Steel engraving 550x750 mm, period coloring. Beautiful map of Mexico, United States. Charles Dyonnet (fl. ca. 1822 - ca. 1880) was an engraver active in Paris in the mid-19th century. He engraved many maps for major atlas publishers such as Vuillemin, Dufour (as in our case), Fremin and Duvotenay. Excellent specimen