Not necessarily wilderness survival, but a friend just gave me a copy of Thomas Glover's Pocket Ref, a compact 860-page book that is absolutely packed with useful information. For ten bucks there's nothing else (not even iPhone apps) that contains as much sheer knowledge.
I did a complete write-up on it here. I'll probably toss one in the glove box of every vehicle we own.
I did a complete write-up on it here. I'll probably toss one in the glove box of every vehicle we own.