My good friend N. Riley Heagerty, an expert on all things Spiritist, Theosophist, and/or Spiritualist has a great book called “The French Revelation”. It is edited from 3 long out of print books by Edward Randell. This from Mr. Heagerty’s blog.
The French Revelation. Emily S.French (1830-1912), was one of the greatest American independent voice mediums. She was investigated by the famous Buffalo attorney, Edward C.Randall (1860-1935), who intended to expose her as a fraud but was over time, and after completing many exacting experiments testing her powers, completely convinced that she was genuine. Mr.Randall became a champion for the cause of survival of death and communication with spirits. During the seances, which were held in complete darkness, the spirit voices would manifest apart from and totally independent of Mrs.French, who was not in trance. The voices would literally manifest from thin air, and carry on conversations with Mr.Randall or whoever else he invited to the seances. A stenographer was employed to take down word for word conversations and Mr.Randall asked many searching, important questions, which are all included in The French Revelation.
N. Riley Heagerty will be interviewed tonight, Thursday, May 27 2010 on the Signs of Life Radio program. You can listen live here, in time the interview will be archived so if you miss it check back to listen at a later time.
http://www.contacttalkradio.com/hosts/signsoflife.html
There is also a podcast of the same name that you can listen to later.