The Case for Spirit Photography: Book Cover

The Case for Spirit Photography by Arthur Conan DoyleFront cover of the book by Sir Arthur Conan Doyle (of Sherlock Holmes fame): The Case for Spirit Photography.
In Doyle's book, he makes the case in support of the Crewe Circle psychic-mediums and spirit photography.
After many investigations by Arthur Conan Doyle of psychic Billyy Hope and other members of the Crewe Circle, the author remained convinced that there was no deception being made by the group in order to fool others.
Many images from the author's investigations, early ghost pictures published within this book in 1923, fill the pages of Doyle's findings about ghosts and spirits. 
This book now fetches from between $150-300 online. The image on the front cover is an actual print made from one of the photographic plates. Our copy was purchased from the estate of a famous magician after he passed.