Bibliography: (I)
Imbrie, John & Katherin Palmer
Ice Ages; Harvard University Press; Cambridge, Mass.; 1986
Imbrogno, Philip & Horrigan, Marianne
Celtic Mysteries in New England; Llewellyn Publications; St. Paul, MN; 2001
Celtic Mysteries, Windows to Another Dimension in America’s Northeast; Cosimo on Demand; New York; 2000
Imperato, Pascal J.
Dogon Cliff Dwellers: The Art of Mali’s Mountain People; L.Kahan Gallery of African Arts; New York; 1978
Ingerman, Sandra
Medicine for the Earth: How to Transform Personal and Environmental Toxins; Three Rivers Press; New York; 2000
Inman, Nick
A Guide to Mystical France; Findhorn Press; Forres, Scotland; 2016
Irwin, Constance
Fair Gods and Stone Faces, Ancient Seafarers and the New World’s Most Intriguing Riddle; St Martin’s Press, New York; 1963
Irwin, John C.
The Sacred Anthill and the Cult of the Primordial Mound; History of Religions; 1982, vol. 21
Izu, Kenro
Sacred Places; Arena Editions; Santa Fe, New Mexico; 2001
Martin Gray is a cultural anthropologist, writer and photographer specializing in the study of pilgrimage traditions and sacred sites around the world. During a 40 year period he has visited more than 2000 pilgrimage places in 165 countries. The World Pilgrimage Guide at sacredsites.com is the most comprehensive source of information on this subject.