As we have a world wide viewing I thought it might be helpful to add this. Ishi is mentioned in the section about Californian arrows so look at this http://en.wikipedia.org/wiki/Ishi
Also I think the last official USA conflict with its native people was with Mashoni Mike in 1913. I might be wrong as i have had to sell lots of books in the past before a got a stable home.
Not Mashoni it is Shoshone I said it was sometime ago that I had the books.