Mary Todd Lincoln, Spirit Photography, Abraham Lincoln, Colleges, Psychics Study, Albumen Silver, Cabinets Cards, Carts De Visit, Cards 1870 75
Medium Ada Emma Deane, photographed by someone else, *still* has a spirit show up on film. Skeptics noticed that Deane required photographic plates be given to her in advance so that she could "pre-magnetise" them with her psychic powers, giving her the opportunity to tamper with them. Her defenders ( includeding Sir Arthur Conan Doyle) insisted that no trickery was involved. They argued that she was merely a simple cleaning lady who lacked the expertise to pull off such deception.