Environmental Protection

The book of earth

Bee-Keeping

The Strangest Things in the World: A Book About Extraordinary Manifestations of Nature

Forest, Lake and Prairie

The Wanderings of an Elephant Hunter

The apiary; or, bees, bee-hives, and bee culture

The Salton Sea: An account of Harriman's fight with the Colorado River

Wilderness Honey

The Wisdom of Albert Schweitzer

Adventure Travel Unleashed

The Antarctic Book of Cooking and Cleaning

The Gospel According to the Earth

Ocean Whispers

Urban Wildlife Adaptation

Seed to Forest

Views of Nature – Contemplations on the Sublime Phenomena of Creation with Scientific Illustrations

In the Catskills: Selections from the Writings of John Burroughs

Good hunting; in pursuit of big game in the West

Sketches in Duneland

Hidden Coral Cities