Psychic Phenomena XII, #30 - Margery, Boston Experiments, Voice Cut-Out Machine
A photograph of the medium, Margery, hooked up to a voice cut-out machine with another unidentified individual ca. 1924. The machine was designed by Dr. Mark Richardson to test direct and teleplasmic voices., Luna Collection ID - 28::UMANITOBALCM::NA, Luna Object ID - 84536, Luna Image ID - 119444