A Walk in the Woods: Rediscovering America on the Appalachian Trail

The Sibley Guide to Trees

Peterson Field Guide To Birds Of North America, Second Edition: The Definitive Resource for Bird Identification and Observation in the Natural World of North America

The Hummingbird Handbook: Everything You Need to Know about These Fascinating Birds

Rooted: Life at the Crossroads of Science, Nature, and Spirit

Nature's Best Hope: A New Approach to Conservation That Starts in Your Yard

Silent Spring

The Lion Tracker's Guide To Life

Nature's Treasures: Tales Of More Than 100 Extraordinary Objects From Nature

Let My People Go Surfing: The Education of a Reluctant Businessman--Including 10 More Years of Business Unusual