America's Stonehenge Deciphered
America's Stonehenge: The History of a Sacred Place
A Guide to America's Stonehenge: A Sacred Ceremonial Site
A Handbook of Stone Structures in Northeastern United States
America's Stonehenge: The Mystery Hill Story
The Ruins of Great Ireland in New England
Hidden Stonehenge: Ancient Temple in North America Reveals the Key to Ancient Wonders
America's Stonehenge : bibliography