Spirit World: Its Inhabitants, Nature, and Philosophy
by Eugene Crowell, M.D.
1879

Mr. Crowell's research into the spirit world tended to convince him that nothing in relation to spirits and their world is impossible, and he here desires to impress upon the mind of the reader the fact that few rules laid down in this work are without exceptions, especially endowed individuals and special facts constantly presenting themselves to invalidate claims that may be made for invariable rules. He was constantly impressed with the numerous unequivocal proofs of the creative and sustaining power of Deity, and step by step he was led to undoubtedly believe that He, though not in human form, is everywhere present.