- A photograph of the medium, Mary Marshall, with a teleplasmic mass attached to her mouth featuring a partial materialization of a miniature version of the face of the spirit, Walter, during a séance at the home of Sylvia Barber on April 25, 1951., Luna Collection ID - 28::UMANITOBALCM::NA, Luna Object ID - 84607, Luna Image ID - 119459
- 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
- A photograph of the medium, Mary Marshall, with a teleplasmic mass, referred to as a voice box, attached to the face of the medium, Mary Marshall, during a seance at the home of Sylvia Barber on February 1, 1950., Luna Collection ID - 28::UMANITOBALCM::NA, Luna Object ID - 84647, Luna Image ID - 119469
- A photograph of the medium, Mary Marshall, with a teleplasmic mass that contained the eyes of the spirit, Walter, attached to the face of the medium, Mary Marshall, during a seance at the home of Sylvia Barber on April 25, 1950., Luna Collection ID - 28::UMANITOBALCM::NA, Luna Object ID - 84631, Luna Image ID - 119465, Any reproductions of this material may be restricted by copyright regulations. Please consult Archives staff for further information.
- A photograph of the medium, Mary Marshall, with a teleplasmic mass, referred to as a voice box, attached to the face of the medium, Mary Marshall, during a seance at the home of Sylvia Barber on February 1, 1950., Luna Collection ID - 28::UMANITOBALCM::NA, Luna Object ID - 84627, Luna Image ID - 119464
- A photograph of the medium, Mary Marshall, with a teleplasmic mass that contained the eyes of the spirit, Walter, attached to the face of the medium, Mary Marshall, during a seance at the home of Sylvia Barber on April 25, 1950., Luna Collection ID - 28::UMANITOBALCM::NA, Luna Object ID - 84651, Luna Image ID - 119470, Any reproductions of this material may be restricted by copyright regulations. Please consult Archives staff for further information.
- A 5" x 7" glass negative of an enlarged, wide-angle view of the medium, Mary Marshall, with a teleplasmic mass attached to her neck during a seance trial at the home of Dr. Thomas Glendenning Hamilton on September 8, 1929., Luna Collection ID - 28::UMANITOBALCM::NA, Luna Object ID - 84794, Luna Image ID - 119505
- A 5" x 7" glass negative of an enlarged stereo view of the medium, Mary Marshall, with a teleplasmic mass attached to her head, face, and neck that contained the face of W.E. Gladstone during a seance at the home of Dr. Thomas Glendenning Hamilton on September 22, 1929., Luna Collection ID - 28::UMANITOBALCM::NA, Luna Object ID - 84802, Luna Image ID - 119507
- A 5" x 7" glass negative of an enlarged stereo view of the medium, Mary Marshall, with a teleplasmic mass attached to her head, face, and neck that contained the face of W.E. Gladstone during a seance at the home of Dr. Thomas Glendenning Hamilton on September 22, 1929., Luna Collection ID - 28::UMANITOBALCM::NA, Luna Object ID - 84806, Luna Image ID - 119508
- A 5" x 7" glass negative of the seance room where the medium, Mary Marshall, teleplasmically materialized the body and torso of the spirit, Lucy, during a seance held at the home of Dr. Thomas Glendenning Hamilton on March 10, 1930., Luna Collection ID - 28::UMANITOBALCM::NA, Luna Object ID - 84814, Luna Image ID - 119510
- An 11" x 7" glass negative of the medium, Mary Marshall, with a teleplasmic mass attached to her face that contained the face of a dog, seated next to the medium, Mercedes, during a seance at the home of Dr. Thomas Glendenning Hamilton on April 3, 1932. This teleplasmic mass was referred to as "The Hound of the Baskervilles" as the spirit of Sir Arthur Conan Doyle was said to be present., Luna Collection ID - 28::UMANITOBALCM::NA, Luna Object ID - 84854, Luna Image ID - 119520, Any reproductions of this material may be restricted by copyright regulations. Please consult Archives staff for further information.
- An 11" x 7" glass negative of the medium, Mary Marshall, with a teleplasmic mass attached to her face that contained the first materialization of the face of Sir Arthur Conan Doyle, seated next to the medium, Mercedes, during the first exposure of a seance at the home of Dr. Thomas Glendenning Hamilton on May 1, 1932., Luna Collection ID - 28::UMANITOBALCM::NA, Luna Object ID - 84866, Luna Image ID - 119523, Any reproductions of this material may be restricted by copyright regulations. Please consult Archives staff for further information.
- An 11" x 7" glass negative of the medium, Mary Marshall, seated next to the medium, Mercedes, with a teleplasmic mass attached to her face that contained the second materialization of the face of Sir Arthur Conan Doyle during a seance at the home of Dr. Thomas Glendenning Hamilton on June 27, 1932., Luna Collection ID - 28::UMANITOBALCM::NA, Luna Object ID - 84874, Luna Image ID - 119525
- A wide-angle photograph of an enlargement of the third teleplasmic materialization of the face and veil of the spirit, Katie King, which hovered above the heads of the mediums, Mary Marshall and Mercedes, during a seance at the home of Dr. Thomas Glendenning Hamilton on January 9, 1933., Luna Collection ID - 28::UMANITOBALCM::NA, Luna Object ID - 84599, Luna Image ID - 119457
- An 11" x 7" glass negative of the seance held at the home of Dr. Thomas Glendenning Hamilton on April 23, 1933, when the teleplasmic materialization of the spirit, Katie King, in a shell-like encasement hovered above the mediums, Mary Marshall and Mercedes., Luna Collection ID - 28::UMANITOBALCM::NA, Luna Object ID - 84878, Luna Image ID - 119526, Any reproductions of this material may be restricted by copyright regulations. Please consult Archives staff for further information.
- An 11" x 7" glass negative of the medium, Mary Marshall, seated next to the entranced medium, Mercedes, with a teleplasmic mass enveloping her head that resembles an umbrella during the first exposure of a seance at the home of Dr. Thomas Glendenning Hamilton on February 25, 1934., Luna Collection ID - 28::UMANITOBALCM::NA, Luna Object ID - 84886, Luna Image ID - 119528
- An 11" x 7" glass negative of the mediums, Mary Marshall and Mercedes, in a deep trance state and a teleplasmic mass hovering above their heads that contained the face of the spirit, John King, during a seance at the home of Dr. Thomas Glendenning Hamilton on March 11, 1934., Luna Collection ID - 28::UMANITOBALCM::NA, Luna Object ID - 84890, Luna Image ID - 119529, Any reproductions of this material may be restricted by copyright regulations. Please consult Archives staff for further information.
- A 5" x 7" glass negative of a stereo view from the right of a teleplasmic mass attached to a cabinet wall behind the mediums, Mary Marshall and Mercedes, during a seance at the home of Dr. Thomas Glendenning Hamilton on December 11, 1935., Luna Collection ID - 28::UMANITOBALCM::NA, Luna Object ID - 84826, Luna Image ID - 119513, Any reproductions of this material may be restricted by copyright regulations. Please consult Archives staff for further information.