'Growing Gourmet and Medicinal Mushrooms' Paul StametsNorth Spore
This is the definitive guide to cultivating mushrooms. Referenced by mycologists and home hobbyists alike, this is an essential part of our mushroom library here at North Spore and should be part of yours if you intend to grow fungi. Paul Stamets is a mushroom guru and innovator. Check out this Ted Talk he gave on ways mushrooms can save the world!