Jules Romains

Eyeless Sight: A Study of Extra-Retinal Visoin and the Paroptic Sense

G. P. Putnam's Sons, London 1924.

Proceedings of the Society for Psychical Research

Vol. 34, London 1924.

Harry Leat

Tragic magic: comprising magical sketches, a number of original tricks, forceful articles, and many items of general interest to magicians

Self published, London 1925.

Journal of the Society for Psychical Research

Vol. 22-23, London 1925.

Proceedings of the Society for Psychical Research

Vol. 35, London 1926.

Proceedings of the Society for Psychical Research

Vol. 35, London 1926.