1947-1951 Psychic Experimentation - Psychic Writing Apparitions--Curiosities and wonders--Supernatural--Spiritualism--Psychical research--Photographs--Occultism--Letter writingMarshall, Mary (Subject) A photograph of the medium, Mary Marshall, with a teleplasmic mass, referred to as a voice box, attacehd to her ear as she prepared to write a letter while in a trance state during a seance at the home of Sylvia Barber on October 29, 1947. Luna Collection ID - 28::UMANITOBALCM::NA Luna Object ID - 84664 Luna Image ID - 119473 Barber, Sylvia (Creator) StillImage image/tif nonprojected graphic local: UM_pc012_A79-041_011_0013_002_0002 /Size0/UMANITOBALCM-28-NA/1087/UM_pc012_A79-041_011_0013_002_0002.tif uofm:1524260 hdl: 10719/1524260 English Hamilton Family fonds--uofm:hamilton_family--10719/hamilton_family--http://nanna.lib.umanitoba.ca/icaatom/index.php/hamilton-family-fonds;rad North America--Canada--Winnipeg 1947-10-29 by-nc/4.0/