Environmental Protection

Future Food

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

Garden of the Future

The Rocky Mountain Wonderland

Beyond Recycling

The Natural History of Selborne

The Child's Book of Nature

Poachers and Poaching

Rodent Control Aided by Emergency Conservation Work

Birds from Coahuila, Mexico

The Book of the National Parks

Man and Nature; Or, Physical Geography as Modified by Human Action

The Wilderness Castaways

Summer

Secrets of the Woods

Pastoral Days; or, Memories of a New England Year

Modern Whaling & Bear-Hunting

Good hunting; in pursuit of big game in the West

The Wanderings of an Elephant Hunter

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