Survival Handbook: The Official U. S. Army Guide Book

Because I've categorized this book as "writing research", it's more of an academic resource than a life guide. I'm really quite a sissy, so most of the survival tips wouldn't do much for me :)

But, when you're writing, it helps to have accurate information about things like setting up a camp or figuring out where you are and which direction to go. Rather than claiming that, in an emergency situation, a character used poison ivy leaves to stop bleeding (not a good move, FYI), a writer would want to know how to describe the use of a tourniquet.