First published in 1911, The Fairy-Faith in Celtic Countries has become a classic on the subject, even though it is less well-known that his Tibetan Book of the Dead, Tibetan Yoga and Secret Doctrines, and The Tibetan Book of the Great Liberation, for example. This has been largely due to its having been out of print for so long. The appearance of this edition in 1977 was therefore extremely timely. The Fairy-Faith in Celtic Countries was Walter Yeeling Evans Wentz's first book. It is dedicated to two people who had greatly influenced him: the poet W.B.Yeats and G.W.Russell - 'AE' - who was perhaps the greatest mystic and visionary of this century (and is the anonymous mystic whose interview is printed on pages 59-66 of this book).