Mushrooms of the Pacific Northwest by Steve Trudell and Joe Ammirati has instant credibility with us; we've met both men, and have very high regard for their expertise in the field. Trudell is affiliate professor in the College of Forest Resources at the University of Washington, and Ammirati is professor of biology and teaches mycology and botany at the same University. Earlier, Dr. Ammirati revised and enlarged the esteemed The New Savory Wild Mushroom (our much used copy, the third edition, dates to 1987), which remains indispensable to anyone attempting to learn about wild mushrooms in our part of the world. Both Trudell and Ammirati are very fine educators, and know their subject well.