Nature

The Ascent of Denali (Mount McKinley)

Scenes in North Wales

Wild Life on the Rockies

Natural History: Reptiles

Bramble-Bees and Others

Canoe and camera: a two hundred mile tour through the Maine forests

Audubon's western journal: 1849–1850

Sanctuary: A Bird Masque

Whale Primer, with Special Attention to the California Gray Whale

Jelly-Fish, Star-Fish, and Sea-Urchins: Being a Research on Primitive Nervous Systems

The Challenge of the North

Little Rivers

Krag and Johnny Bear

Adventures in Alaska

The Book of the Ocean

Wild Flowers Worth Knowing

Forest, Rock, and Stream

Four-Footed Americans and Their Kin

The Manatitlans or, A record of recent scientific explorations in the Andean La Plata, S. A

Butterfly Man