Survive!
Les Stroud
This is the definitive text for hard core solo wilderness survival. How to prepare for when things go wrong. It also provides the best guidance on assembling your own survival kit. On the one hand it takes a deep dive into the essential technical details of what it takes to survive in isolated wilderness situations. One the other hand, it outlines how to acquire the mental tools of preparedness and decision making that could very well mean life or death.
How to Stay Alive
Bear Grylls
This book really provides a fusion between survival and adventure , with the survival skills spanning wilderness through domestic situations and the adventure skills spanning roughing it in the woods to basic mountaineering techniques.
Bushcraft
Mors Kochanski
This book provides a solid and comprehensive introduction to the entire gamut of bushcraft skills. It covers all the bases for living off the land, in the northern boreal forest, and thriving rather than merely surviving.