The Berkely Campus Museum at one time had a very nice display of bows, arrows, quiver and some beautifully knapped obsidian points of Ishi.
There is also another fairly accurate fictional video titled "Ishi The Last Yahi" with Jon Voight playing Dr. Krober. Unfortunately it is currently a bit hard to find.
For some reason I seem to be unable to get the sound working on this youtube version. Will keep trying as it looks interesting. Thanks!!!! YEP Got it now! Cool....