Environmental Protection

Cork: Its Origin and Industrial Uses

The Spell of the White Sturgeon

Island Trail at Walnut Canyon. Walnut Canyon National Monument

Some Common Birds Useful to the Farmer

El Morro Trails: El Morro National Monument, New Mexico

The Lobster Fishery of Maine

A Guide to Natural Bridges National Monument, Utah

Big Bend National Park, Texas

The Face of the Earth as Seen from the Air

Conservation of marine birds of northern North America: papers from the international symposium held at the Seattle Hyatt House

The Story of a Red Deer

Life at the Zoo: Notes and Traditions of the Regent's Park Gardens

Jack Miner and the Birds, and Some Things I Know about Nature

Proceedings of the fourth National Conservation Congress at Indianapolis, October 1–4, 1912

Woodmyth & Fable

Water and power for San Francisco from Hetch-Hetchy Valley in Yosemite National Park

Rivers of Great Britain

The Tropical World

The Adventures of Fleet Foot and Her Fawns. A True-to-Nature Story for Children and Their Elders

The Clerk of the Woods