Apart from E.L. Doctorow, no one was able to conjure the late Harry Houdini, not even his widow.
But she certainly tried. A famed debunker of spiritualists, Houdini made a pact with his wife, Bess, that if the dead could speak to the living, he would deliver to her a special coded message from the beyond. Nobody but the two knew what the special message was. When a poorly received punch to the abdomen in 1926 made it impossible for the entertainer to escape death, his widow annually attempted to contact him through séance. No words were reportedly ever exchanged. The following are a couple of Brooklyn Daily Eagle articles about the wife’s attempts to continue the marital conversation.
From April 24, 1936:
From February 12, 1943: