1864. Steel-engraving. 1864. 190mm by 140mm (image) 285mm by 210mm (sheet). Facsimile signature under the engraving. Charles Wilkes (1798 - 1877) was an American naval officer and explorer. He led the United States Exploring Expedition, 1838-1842.The United States Exploring Expedition, commonly known as the 'Wilkes Expedition' was carried by.....