BRITISH AUTHORESS, daughter of Capt. Marryat, acquainted with all the celebrated mediums of the
1870's and 1860's both in Britain and America, witness of Katie King's famous farewell from Florence Cook, recorded remarkable experiences in two books:
There is No Death, 1891, and The Spirit World, 1894, both of them very popular, and claimed mediumistic gifts herself, among them the strange power of summoning the spirits of the living.
Source (with minor modifications):
An Encyclopaedia of Psychic Science by Nandor Fodor (1934).
Articles by Florence Marryat
My Spirit Child - Florence Marryat's experiences with Florence Cook in materialisation phenomena
Mediumship of Katie Cook