Aradia, or the Gospel of the Witches
Aradia, or the Gospel of the Witches is a book by the American folklorist Charles Godfrey Leland that was published in 1899. It contains what he believed was the religious text of a group of pagan witches in Tuscany, Italy, that documented their beliefs and rituals.
Source: Wikipedia — Aradia, or the Gospel of the Witches (CC BY-SA 4.0)