Ecology

Lodges in the Wilderness

Mountaineering in the Sierra Nevada

Wild Life Near Home

Wild Bees, Wasps and Ants and Other Stinging Insects

The Turtles of Tasman

With God in the Yellowstone

Woodland Tales

Vanishing Forests

Dream Life: A Fable of the Seasons

Grand Teton [Wyoming] National Park

The Life-Story of Insects

The Game Fish, of the Northern States and British Provinces

Food Habits of the Thrushes of the United States

The Myxomycetes of the Miami Valley, Ohio

Forest Trees of Illinois: How to Know Them

Coal, and What We Get from It

Essays in Natural History and Agriculture

Minnesota; Its Character and Climate

With the Harmony to Labrador

World's End