I am proud to say at one time I supported the Sawtooth Pack and that trying to keep track of them was part of my life. This book was interesting to read and has so many beautiful pictures that I like to reference in my art. Still, it's falling apart now from use and I most likely won't replace it when it goes simply due to it's size. It's a heavy book and not something you can simply sit down with. The CD is OK... the fact the same recording repeats for hours is a bit annoying just since most players can repeat on their own so it's not needed.