Nature

Second State of the Union Address

Natural History of the Ground Squirrels of California

Natural History: Fishes

First State of the Union Address

CMH Publication #24–1Learning Lessons in the American Expeditionary Forces

A Short History of the Academy of Natural Sciences of Philadelphia

Natural History: Mollusca

Polar Exploration

Lectures on Landscape

Stars of the Desert

From North Pole to Equator: Studies of Wild Life and Scenes in Many Lands

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