There are 3 known, historic incidents in the 500 years from 1400 to 1900 AD of Japanse fishing boats and crew being washed ashore on the Queen Charlottes. In all 3 cases the Haida took the Japanses crew as slaves... but in the incident in the 1860's a British fur trading crew bought the slaves and sent them back to Japan as a good will gesture, the long way around via San Francisco, New York, London, Europe and the Orient Express.
Don't ask me for a source on that one cause I can't remember where I read it.