Environmental Protection

Bird Stories from Burroughs

The Child's Book of Nature

Wanderings in South America

The New North

The House of the Trees & Other Poems

My Year In A Log Cabin

On Naval Timber and Arboriculture

Pearls and Pebbles; or, Notes of an Old Naturalist

The Arctic Circle

Islands and Communities

Tinicum & Eastwick

Cottontail Rabbits in Relation to Trees and Farm Crops

Nature Near London

Beaches World Wide

The Extermination of the American Bison