Journal of the Society for Psychical Research

Vol. 4, London 1889.

Proceedings of the Society for Psychical Research

Vol. 6, London 1889.

Proceedings of the Society for Psychical Research

Vol. 6, London 1889.

Carl Du Prel

The philosophy of mysticism

George Redway, London 1889.

Niceforo Filatete e Vincenzo Scarpa

Annali dello spiritismo in Italia

Vol. 27-28, Tipografia A. Baglione, Torino 1890.

Journal of the Society for Psychical Research

Vol. 5, London 1891.

Proceedings of the Society for Psychical Research

Vol. 7, London 1891.

Proceedings of the Society for Psychical Research

Vol. 8, London 1892.

Niceforo Filatete e Vincenzo Scarpa

Annali dello spiritismo in Italia

Vol. 29-30, Tipografia A. Baglione, Torino 1892.

Julia E. Garrett

Mediums Unmasked: an Exposé of Modern Spiritualism

H.M. Lee and Bro. Publishers, Los Angeles 1892.