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2. Carmack, Sharon DeBartolo, In Search of Maria B. Hayden: The American Medium Who Brought Spiritualism to the UK (Salt Lake City: Scattered Leaves Press, 2020).
3. De Morgan, Augustus, A Budget of Paradoxes, 2nd edn, ed. by David Eugene Smith, 2 vols. (Chicago: Open Court, 1915).
4. De Morgan, Mary, Complete Fairy Tales (New York: F. Watts, 1963).
5. De Morgan, Sophia Elizabeth, From Matter to Spirit. The Result of Ten Years’ Experience in Spirit Manifestations. Intended as a Guide to Enquirers (London: Longman, Green, Longman, Roberts & Green, 1863).