Environmental Protection

Citizen Scientist

The music of the spheres : A nature lover's astronomy

Our Arctic province : Alaska and the Seal Islands

The Yosemite

Down from the Mountain

In Brightest Africa

Hold Your Water

Pere Marquette State Park

The Geologic Story of Glacier National Park

Shoshone National Forest, Wyoming

A Thousand-Mile Walk to the Gulf (With Original Drawings & Photographs)

Watched by Wild Animals

Good hunting; in pursuit of big game in the West

Practical Forestry in the Pacific Northwest

A Natural State

Nature's Tapestry: Uncovering the Beauty and Importance of Biodiversity

King Sequoia

The Garden, You, and I

Whale hunting with gun and camera

Proceedings of the fourth National Conservation Congress at Indianapolis, October 1–4, 1912