Malleus Maleficarum

in Latin, written by Jacob Springer and Heinrich Kramentrans, 1486

Also known as the "Hammer of Witches." A guide for inquisitors in the Middle Ages on the identification and torturous persuasion of witches. This terrible book helped to send approximately nine million people to their deaths. (Petersen, Sandy, and H. P. Lovecraft. Call of Cthulhu Keeper Rulebook Horror Roleplaying in the Worlds of H.P. Lovecraft. Chaosium, Inc., 2016.)
Reverend Ward Phillips acquired this volume for Miskatonic University during his tenure as librarian there in 1809. Armitage immediately marked this book for Restricted status, and was disturbed to find the book missing from the shelves. Its current whereabouts are unknown. (Johnson, Sam, and Sandy Antunes. "Miskatonic University: A Handbook to the Pride of Arkham." Chaosium, Oct. 2005.)