The Orpheus Box — John F.D. Taff

The Orpheus Box is the story of Thomas Edison's etheragraph, an invention created for communicating with the dead. ...It is possible to construct an apparatus which will be so delicate that if there are personalities in another existence or sphere who wish to get in touch with us in this existence or sphere, this apparatus will at least give them a better opportunity to express themselves... . Thomas A. Edison Scientific American, Oct. 30, 1920