Sculptress and wife of French playwright Alexandre Bisson. The Bissons conducted a series of séances between 1909 and 1913 with the celebrated materialization medium Marthe Beraud (known as Eva C.) In May 1909 Baron von Schrenck-Notzing joined the circle and began his detailed scientific observations.
Sources:
Schrenck-Notzing, Albert von. Materialisationspaenomene. Munich: Ernst Reinhart, 1914. Translated as Phenomena of Materialisation: A Contribution to the Investigation of Mediumistic Teleplastics. London, 1923.
