I do know his brother read it, he just didn't reread it, so for those who aren't mythology nuts, it might be a good one to read aloud together. It is both fascinating and beautiful. Here are just a few of the illustrations. I got my expert to interpret them.
Three brothers defeating an Ice Giant whose body parts then became Earth. I think those rocks are his teeth.
The first people, who used to be trees.
These guys ate a special apple that made them younger. Before is above and after is below.
Highly recommended. This is one that will eventually be a family heirloom. For ages seven or eight and up.