A copy of Invectives Against The Sect of Waldensians was discovered in an Alberta library. “The manuscript is thought to have been written around 1465 by a monk in what is now France’s Burgundy region, possibly for England’s King Edward IV, said Gow.   It is exceedingly rare—one of only four copies known to exist—and is thought to be one of the founding texts in the modern conception of witchcraft….The purpose of the book…was to instruct witch hunters on how to identify and prosecute supposed servants of the devil.”