Nature

The Mason-Wasps

The Hunting Wasps

The Anatomy of Vegetables Begun

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

Ferrets

World of Pollinators: A Guide for Explorers of All Ages

Milksnakes

Garter Snakes and Water Snakes

Know your Freshwater Fishes

Your Healthy & Happy Horse

Know Your Donkeys & Mules

Horned Frogs

Freshwater Aquariums

Boa Constrictor Manual

Livebearers

The Original Horse Bible

Know Your Pigs

Pets Gone Green

Common Kingsnakes

Llamas and Alpacas