Primate Cognition

The Best of Sasquatch Bigfoot

North America's Great Ape: The Sasquatch - A Wildlife Biologist Looks at the Continent's Most Misunderstood Large Mammal

Abominable Snowmen: Legend Come to Life

The Discovery of the Sasquatch

The Chimpanzees of Gombe: Patterns of Behavior

The Impenetrable Forest: Gorilla Years in Uganda

Abominable Snowmen, Legend Comes To Life: Bigfoot, Sasquatch, Oh-Mah, Grassman And Skunk Ape: The Story Of Sub-Humans On Five Continents From The Early Ice Age Until Today Illustrated

The Sound Book: The Science of the Sonic Wonders of the World

The Appalachian Bigfoot