George Catlin's 1832 portrait of Stu-mick-o-sucks, Buffalo Bull's Back Fat, Head Chief, Blood Tribe, Blackfoot. The Blackfoot were a tribe of the northernmost Plains - a territory that straddles the present-day border betwen US and Canada. "Catlin considered the people of the northernmost Plains the least corrupted by white contact, and he helped establish their image as nature's noble people in Europe as well as America." Worth seeing this exhibition at the National Portrait Gallery, London.
http://www.npg.org.uk