Soul Dog: A Journey into the Spiritual Life of Animals, Bear & Company, 2018

Soul Healing with Our Animal Companions: The Hidden Keys to a Deeper Animal-Human Connection, Bear & Company, 2018

Spiritual Intelligence: What we can learn from the early awakening child.

Starry Night (movie)

State of the World 2004 / W.W. Norton & Company, 2004

Shipwrecks, Sea Raiders, and Maritime Disasters along the Delmarva Coast, 1632—2004, Johns Hopkins University Press, 2007

Shyness: A Bold New Approach

Sacred Cows and Golden Geese: The Human Cost of Experiments on Animals

Sacred Messengers of Shamanic Africa: Teachings from Zep Tepi, the Land of First Time (with Linda Star Wolf, Ph.D.), Bear and Co., 2018

Route 66: Images of America’s Main Street, McFarland & Co., 2003