ALS signed “A. Conan Doyle,” one page, 5.25 x 6.75, Biltmore Hotel, New York letterhead, no date. Doyle writes to Mr. Pulaski. In full: “May I ask if you have had any more ectoplasmic photographs? I propose to show tonight one which you gave me.” Doyle maintained a lifelong fascination with spiritualism and the supernatural and was an ardent believer in “spirit” and “ectoplasmic” photography, despite the fact that such phenomena were exposed time and again as hoaxes achieved through simple fakery and camera tricks. In fine condition. R&R COA.