Ecology

Coal, and What We Get from It

The Child's Book of Nature

Essays in Natural History and Agriculture

Minnesota; Its Character and Climate

With the Harmony to Labrador

World's End

Wild Life at the Land's End

The Web of Life

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

Earthworms and Their Allies

The Mountain that was 'God

The Book of the Fly

Wilderness Babies

Fishes of Chautauqua, Cowley and Elk Counties, Kansas

Mammals of Northwestern South Dakota

Deep-Sea Conservation Efforts

The House of the Trees & Other Poems

Arqtiq: A Study of the Marvels at the North Pole

On the Variation of Species, with Especial Reference to the Insecta

The Game-Birds of the Coasts and Lakes of the Northern States of America