In my research I stumbled upon this, a recording of the Halloween séance in 1936 for Harry Houdini on the roof of the Knickerbocker Hotel in Hollywood. This was the tenth anniversary of his death and as agreed, the last attempt by his widow to contact him. 
According to an elaborate plan, that whichever of them died first would try for ten years to get in touch with the other, on the other side. Houdini was known as an antagonist to the spiritualists, but so wanted to believe that it was possible for the living and the dead to communicate, but he demanded proof.
Some 300 invited guests formed the outer circle, with 13 scientists, specialists in the occult, reporters, magicians, and spiritual leaders joining Mrs. Houdini in an inner circle.
This recording is narrated by George L. Boston. And yes, that is the voice of Mrs. Houdini. It’s kind of awesome.

http://ia600408.us.archive.org/13/ite...