The Search: The Continuing Story of the The Tracker

Mountain Gorillas: Biology, Conservation, and Coexistence

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

Bigfoot Casebook Updated: Sightings and Encounters from 1818 to 2004

Our Inner Ape: The Best And Worst Of Human Nature

The Appalachian Bigfoot

The Chimpanzees of Gombe: Patterns of Behavior

Songs of the Gorilla Nation: My Journey Through Autism

Bigfoot!: The True Story of Apes in America