Mammals

Frozen Fauna of the Mammoth Steppe

Africa's Wild Dogs

Everything you Wanted to Know about the Countryside

The Confessions of a Beachcomber

Wildlife Wars

Black Bruin: The Biography of a Bear

Notes on the Mammals of Gogebic and Ontonagon Counties

Rataplan, a Rogue Elephant; and Other Stories

The Dolphin in History

The Botanical Lore of the California Indians with Side Lights on Historical Incidents in California

The Geologic Story of Palo Duro Canyon

The Great Horse; or, The War Horse

Cactus Forest Drive, Saguaro National Monument

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

Mammals of Mount Rainier National Park

Fur Farming for Profit, with Especial Reference to Skunk Raising

The Pleistocene of North America and its vertebrated animals

Flowers of Mountain and Plain

Carlsbad Caverns National Park, New Mexico

Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado