There are a few things interesting about that image on the right. First, it's part of a handwritten dissertation on astrology that was written by Lovecraft. Second, it has Houdini's signature on it. Third, the entire set of papers just got auctioned off on eBay for US$5,355.00.
More on Houdini, Lovecraft, and astrology here.
Link (via Paul of Cthulhu).
