The story of Helen Duncan, materialisation medium : a dramatic account of the tragedy and persecution of the greatest physical medium in psychic history /
Crossley, Alan E.(Alan Ernest),1924-
Greenford : Psychic World Classic,
1999.
Repr. with publisher's addendum. - Originally published: Ilfracombe : Stockwell, 1975.
Duncan, Helen, 1895-1956.
Mediums