Nature

Second State of the Union Address

The Glow-Worm and Other Beetles

Texas Honey Plants

Hunting the Grisly and Other Sketches

Days in the Open

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

The Accomplished Muskrat Trapper: A Book on Trapping for Amateurs

A Short History of the Academy of Natural Sciences of Philadelphia

Natural History: Mollusca

New Zealand Moths and Butterflies (Macro-Lepidoptera)

Polar Exploration

Domesticated Animals

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

The Face of the Fields