Caption:

Engraving by Rawdon, Wright Hatch & Edson after an original work by Titian Peale. Two wolves found in Oregon Territory; on the right is the Mackenzie Valley wolf. From 'United States Exploring Expedition. During the years 1838, 1839, 1840, 1841, 1842' by John Cassin, (Philadelphia, 1858). This first US scientific expedition led by Lieutenant Charles Wilkes (1798-1877), visited South America, Samoa, Australia, New Zealand, Fiji, Hawaii, the Northwest coast of North America and the China Sea. Its aims were: to improve knowledge of the Pacific, the Hudson's Bay Company's settlements, and the Indian tribes and their allegiances; to explore trading opportunities; to record the flora and fauna encountered and to find a southern continent.