books.google.com - Descriptions and photographs of two hundred one edible and poisonous species found in western North America are accompanied by comments on edibility, habitat and range, and microscopic characters...http://books.google.com/books/about/A_field_guide_to_Western_mushrooms.html?id=q7eXGZQG7ksC&utm_source=gb-gplus-shareA field guide to Western mushrooms
