A facsimile edition of the tattered notebooks of the Unknown Adventurer, this love letter to the wild details everything you need to know about how to live and thrive in nature, from the principles of treehouse building to wilderness first aid. If you are reading this, it means my notebooks have been found. I am leaving them here at camp for safekeeping along with a few other belongings that I won’t be taking with me. The notebooks are a lifetime’s worth of knowledge, which I’m passing on the you. So reads an excerpt from the weatherworn letter discovered by nature enthusiast Teddy Keen on a recent trip to the Amazon, along with sketchbooks filled with details of extraordinary adventures and escapades, expedition advice, and survival methods, annotated with captivating colored-pencil drawings. It is thought that the sketchbooks were created for two young relatives of the author. Drawing on Teddy’s knowledge of the outdoors, the pages of the sketchbooks have been carefully transcribed for young readers, as they were originally intended.