An interesting blog, Chasing Down Emma, devoted to scholarship about Emma Hardinge Brittan, the nineteenth century Spiritualist medium and author of Modern American Spiritualism (1870), who developed the seven principles which still characterize the belief system of spiritualism today: The Fatherhood of God, The Brotherhood of Man, The Communion of Spirits and the Ministry of Angels, The Continuous Existence of the Human Soul, Personal Responsibility, Compensation and Retribution Hereafter For All the Good and Evil Deeds Done On Earth, Eternal Progress Open To Every Human Soul. Here's a link to a companion archive on Mrs. Britten. While the archive has a link to the blog, the reverse doesn't seem to be true.
From what I know about Mrs. Britten, she was a spirited sort. I can't readily discern who runs the archive and blog, but I'll bet he or she is having a lot of fun chasing Emma down.