Nature

The Stewardship of the Soil

New Rivers of the North: The Yarn of Two Amateur Explorers

Elementary Botany

John Kerry's testimony before the Senate Foreign Relations Committee

Devils Tower National Monument

Birds of Song and Story

Two Ways of Becoming a Hunter

Four-Footed Americans and Their Kin

Tales of a Vanishing River

Mushroom and Toadstools

At the Sign of the Fox

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

Eighth State of the Union Address

Desert Life Secrets

Animal Migration Paths

The Spell of the Rockies

Nature Mind Healing

The Lapland

Old Fashioned Flowers, and other out-of-door studies

Old Fashioned Flowers, and other out-of-door studies