> currently housed safely at the National History Museum of Los Angeles County. I see that as a lead in to a heist movie. Aside from that... I wonder if ther

> currently housed safely at the National History Museum of Los Angeles County. I see that as a lead in to a heist movie. Aside from that... I wonder if there are other samples of this material yet to be found. Also, is it the only one known because it's the only one that's been properly identified?