Ecology

Woodland Paths

Birds, Beasts and Flowers

Rambles of a Naturalist

How We Are Fed: A Geographical Reader

Wake-Robin

Wilderness Babies

Checking the Waste: A Study in Conservation

The Song of the Stone Wall

The Life-Story of Insects

The Heart of the Wild: Nature Studies from Near and Far

The Andes of Southern Peru

Cornell Nature-Study Leaflets

Food of the Crow, Corvus brachyrhynchos Brehm, in South-central Kansas

The new northland

Watersprings

An essay towards a natural history of serpents

Water Survival Skills

Shelter Building Basics

Arqtiq: A Study of the Marvels at the North Pole

A Guide to Natural Bridges National Monument, Utah