Nature

The Great Horse; or, The War Horse

Amphibians and Reptiles in Captivity

Birds of the National Parks in Hawaii

Cactus Forest Drive, Saguaro National Monument

Wild Animals of the Rockies. With a List of Mammals found in Rocky Mountain National Park

The Young Woodsman; Or, Life in the Forests of Canada

Preliminary Report on Gowganda Mining Division District of Nipissing Ontario

The Trail of the Elk

Mammals of Mount Rainier National Park

Secrets of Earth and Sea

Grand Teton: A Guide to Grand Teton National Park, Wyoming

Fossil Forests of the Yellowstone National Park

The Turquoise Story Book: Stories and Legends of Summer and Nature

Yellowstone and Grand Teton National Parks

Flower Guide: Wild Flowers East of the Rockies (Revised and with New Illustrations)

Western Bird Guide: Birds of the Rockies and West to the Pacific

The Geologic Setting of the John Day Country: Grant County, Oregon

Then and Now or, Thirty-Six Years in the Rockies

Our Wild World

Fur Farming for Profit, with Especial Reference to Skunk Raising