Our National Parks

Plant Galls of the Western United States

My First Summer in the Sierra

The Complete Guide to Edible Wild Plants, Mushrooms, Fruits, and Nuts: Finding, Identifying, and Cooking, Edition 3

Cherry

Travels in Alaska

The Plant Stem: A Microscopic Aspect

The Yosemite

The Big Burn: Teddy Roosevelt and the Fire that Saved America

A Thousand-Mile Walk to the Gulf

Steep Trails

The World of Ficus Bonsai

Reforesting Faith: What Trees Teach Us About the Nature of God and His Love for Us

The Grand Cañon of the Colorado

Tales of a Shaman's Apprentice: An Ethnobotanist Searches for New Medicines in the Rain Forest

The Wilderness Essays: Exploring the Beauty and Importance of the Natural World Through the Eyes of a Conservationist

The Secret Life of the Forest

John Muir: Wilderness Essays, Environmental Studies, Memoirs & Letters (Illustrated Edition): Picturesque California, The Treasures of the Yosemite, Our National Parks...

Trees of Eastern North America