We also found this gem at Costco.
I've read quite a bit about it on-line. Here's a clip from Neat-o-rama:
"The Dangerous Book for Boys” is the one book that I wish I had when I was a young boy. In today’s age of computer and video games, this book reminds you that there is still a place for knots, go-karts, treehouses, as well as stories of adventure and courage. The Dangerous Book for Boys is more than just a book -it’s a manual on how to recapture Sunday afternoons and long summer days. It covers things that belong in the quintessential boyhood, like the five knots every boy should know, how to navigate using a compass (or awatch or a stick if you don’t have a compass - yes,it can be done), and how to make invisible ink (how? With urine, of course!)Can’t tell the difference between latitude and longitude? This book will set you straight - it has general (well, for boys anyways) knowledge chapters on dinosaurs, famous battles, ciphers, and more. It even has a chapter on - gasp -girls!