Ecology

A Thousand-Mile Walk to the Gulf (With Original Drawings & Photographs)

Everglades Wildguide

The Web of Life

Wild Life at the Land's End

The Book of the Fly

The Mountain that was 'God

The River and I

The Game Fish, of the Northern States and British Provinces

The Twelve Months of the Year, with a Picture for each Month

Mammals of Northwestern South Dakota

World's End

Out of Doors—California and Oregon

Food Habits of the Thrushes of the United States

Earthworms and Their Allies

An Account of the Insects Noxious to Agriculture and Plants in New Zealand

Fishes of Chautauqua, Cowley and Elk Counties, Kansas

Notes of a naturalist in South America

Forest Trees of Illinois: How to Know Them

Trees: A Woodland Notebook

Love's Meinie: Three Lectures on Greek and English Birds