Nature

The Outermost House

Flyaway

The Romance of the Colorado River

An Australian Bird Book: A Pocket Book for Field Use

A Summer in a Canyon

The Song of the Stone Wall

Owls

Barbaro

Nests and Eggs of Birds of the United States

Ants and Some Other Insects: An Inquiry Into the Psychic Powers of These Animals

Lichens

North American Wild Flowers

American Forest Trees

Arctic Climate Change

A Shepherd's Life: Impressions of the South Wiltshire Downs

How to Tell the Birds from the Flowers: A Manual of Flornithology for Beginners

The Arctic Prairies : a Canoe-Journey of 2,000 Miles in Search of the Caribou

The Central Eskimo (Illustrated)

Idle Hours in a Library

Notes on Collecting and Preserving Natural-History Objects