Hi all!  I've never read anything about pictographs, and I'm doing a trip on the Kawishiwi this summer.  I would like to know if there are any good "first reads" to give me a background of knowledge about pictographs.  I take middle school students and want to be somewhat informed when we get to that point of our trip.  Specifically, we will camp near the north end of Insula and day trip east through Alice towards Fishdance where those pictographs are!  Thanks for any info!