Charles Vernon Boys

Soap-bubbles, their colours and the forces which mould them

Society for promoting Christian Science, London 1896.

Proceedings of the Society for Psychical Research

Vol. 13, London 1897.

Journal of the Society for Psychical Research

Vol. 8, London 1897.

Albert Allis Hopkins e Henry Ridgely Evans

Magic, Stage Illusions and Scientific Diversions including Trick Photography

Sampson Low, Marston & Co., London 1897.

August Roterberg

New Era Card Tricks

Messrs W. & F. Hamley, London 1897.

Proceedings of the Society for Psychical Research

Vol. 14, London 1898.