Environmental Protection

Wilderness Honey

The Wisdom of Albert Schweitzer

Adventure Travel Unleashed

The Gospel According to the Earth

Sketches in Duneland

Thornton Burgess: Collected Works

How to Camp Out

The Wild Elephant and the Method of Capturing and Taming it in Ceylon

The Rocky Mountain Wonderland

A Pictorial Guide to Mesa Verde National Park

Mooswa & Others of the Boundaries

Pearls and Pebbles; or, Notes of an Old Naturalist

Islands and Communities

Flashlights on Nature

Nature's invitation: Notes of a bird-gazer, North and South

By the Marshes of Minas

A Short Account of the Botany of Poole

The Stewardship of the Soil

Tales of a Vanishing River

At the Sign of the Fox