Period: 1920s

A 1923 spirit photograph by Alexander Martin featuring Harry Houdini and five spirits. Houdini declared the spirit photograph fraudulent, stating: I have not the slightest doubt that Mr. Martin’s Spirit photographs were simply double exposures. I think his method was to cut out various pictures, place them on a background and make an exposure. His plates were then ready for his next sitter, which in the above instance was myself. Being an expert photographer he might have used the original wet plate method of making an exposure, developing it, washing the emulsion off the plate and refinishing it with a new emulsion but I am convinced that the two Spirit photos which he made of me were simply double exposures.…

A 1920s spirit photograph by The Falconer Brothers. The photograph features Craig Falconer, an unidentified woman, and two spirits surrounded by ectoplasm.

A 1920s spirit photograph, on a 35mm slide, by The Falconer Brothers. The photograph features Craig Falconer and an unidentified man and an upside-down spirit surrounded by ectoplasm.

A 1920s spirit photograph, on a lantern slide, by an unknown photographer. The photograph features two women and a spirit.

A 1920s spirit photograph by William Hope featuring an unidentified woman and two spirits.

A 1920s spirit photograph by William Hope featuring an unidentified man and two spirits.

An advertisement by Sir Arthur Conan Doyle in the January 6th, 1923 edition of Light for his book, The Case for Spirit Photography. The book offers "corroborative evidence by experienced researchers and photographers" for the price of 2s 10d.

A 1920s spirit photograph by William Hope featuring an unidentified man and woman, and a spirit surrounded by ectoplasm. Written on the back of the photograph is: These pictures were taken by Mr. Hope at Crewe, England. We purchased the plates in London the same day. They never left our hands, we not only put them in the plate holders, developed them afterwards, and positively know that no exchange was made. With a magnifying glass many additional heads may be seen.

A 1920s spirit photograph RPPC (Real Photograph Postcard) by an unknown photographer. The photograph features three spirits at Camp Chesterfield Spiritualist community. Written on the back is "Find at least ghosts". Camp Chesterfield – Founded in 1891 and is the home of the Indiana Association of Spiritualists, located in Chesterfield, Indiana. Camp Chesterfield offers Spiritualist Church services, seminary, and mediumship, faith healing, and spiritual development classes, as well as psychic readings for patrons.

A 1924 spirit photograph by an unknown photographer featuring an unidentified man and nine spirits.