John W. Edmonds (1799-1874), a prominent New York judge, and George T. Dexter, a New York physician, met though their shared interest in the spirit world. They were both dabbling in the spiritualist movement - first with scepticism - and decided to join forces in their investigations of such phenomena as 'spirit-rappings'. Dexter eventually found himself 'fully developed as a writing medium', with his pen controlled by unseen forces. Their conclusions, published in 1853 in Spiritualism, which went into numerous editions and was followed in 1855 by a second volume, caused much controversy. Drawing from their observations, the work gives examples of the authors' purported interaction with the spirit world and their journey from doubt to belief. Dexter also became a 'speaking medium', and the work includes transcriptions taken by Edmonds of what the spirits relayed through his co-author during the meetings of their circle of spiritualists.

Appendix by: Nathaniel P. Tallmadge