Environmental Protection

The Rocky Mountain Wonderland

A Pictorial Guide to Mesa Verde National Park

Wakulla

Mooswa & Others of the Boundaries

Modern Whaling & Bear-Hunting

Our Common Land (and Other Short Essays)

Pearls and Pebbles; or, Notes of an Old Naturalist

Islands and Communities

Wild Folk

Lobo, Rag and Vixen

Flashlights on Nature

Wild Animals at Home

Nature's invitation: Notes of a bird-gazer, North and South

Our Arctic province : Alaska and the Seal Islands

The turtles, snakes, frogs and other reptiles and amphibians of New England and the north

Colin Clout's Calendar: The Record of a Summer, April-October

By the Marshes of Minas

A Short Account of the Botany of Poole

Letters to a Friend, Written to Mrs. Ezra S. Carr, 1866–1879

From North Pole to Equator: Studies of Wild Life and Scenes in Many Lands