Editor: Gary H. Lincoff. This great field guide is a sturdy 4" x 7" leatherette bound book designed to take field use. Nearly 50% of the book consists of full color photographs of North American mushrooms. Its 500 pages include a guide to edibility. Sturdy enough to go in a day-pack. An excellent buy, especially with our free shipping. If you prefer order by phone toll-free: 866.596.9982. FREE SHIPPING!