Call of Cthulhu: Letters from Arkham
Malleus Maleficarum “Hammer of the Witches”
Latin by Jakob Sprenger and Heinrich Kramers, 1486 AD.
This thick, leather bound book is so ancient that the engraving on the cover is almost impossible to make out. It might be an original edition.
A guide for inquisitors in the Middle Ages on the identification and torturous persuasion of witches. This terrible book helped send an estimated nine million people to their deaths.
Found by Robert Newman under the house on Academy Avenue in April 1926