Aradia

If Gerald Brosseau Gardner is the father of the religion that calls itself Wicca, then Charles Godfrey Leland is the grandfather of Witchcraft as a religion in the English-speaking world, and his small book, Aradia, is that religion's birth-announcement. It is the first work in English in which Witchcraft is portrayed as an underground old religion, surviving in secret from ancient Pagan times.