Environmental Protection

Water Purification

Wake-Robin

The Land's End: A Naturalist's Impressions In West Cornwall, Illustrated

American Big-Game Hunting: The Book of the Boone and Crockett Club

Wayside and Woodland Trees: A pocket guide to the British sylva

Forest Neighbors: Life Stories of Wild Animals

A Florida Sketch-Book

Science of Fog

Whitefoot the Wood Mouse

Essays of a Biologist

The Extermination of the American Bison

Moths of the Limberlost: A Book About Limberlost Cabin

Notes of a naturalist in South America

The Flower-Fields of Alpine Switzerland: An Appreciation and a Plea

Nature's Serial Story

On Cambrian and Cumbrian Hills: Pilgrimages to Snowdon and Scafell

Supplement to Animal Sanctuaries in Labrador

Woodcraft & Camping

A Leaf from the Old Forest

Wild Life at the Land's End