Animals

Know Your Cows

Llamas and Alpacas

The Lizard Keeper's Handbook

Marine Aquariums

Predators I Have Known

Hero of Kumaon

Angling Sketches

Bears I Have Met—and Others

The Natural History of Cage Birds

The Amphibians and Reptiles of Michoacán, México

True Bear Stories

Insect Stories

A Bird-Lover in the West

The Genera of Phyllomedusine Frogs (Anura: Hylidae)

A Check-List of the Birds of Idaho

Birds In the Calendar

False Knees

Condor

The Wool Industry a Global History

Riding Home