Proceedings of the American Society for Psychical Research

Vol. 12, 1918.

Proceedings of the Society for Psychical Research

Vol. 30, 1918.

Proceedings of the Society for Psychical Research

Vol. 30, 1918.

Stuart Cumberland

That other world: personal experiences of mystics and their mysticism

Grant Richards, London 1918.

Proceedings of the American Society for Psychical Research

Vol. 13, 1919.

Journal of the Society for Psychical Research

Vol. 19, London 1919.

Journal of the American Society for Psychical Research

Vol. 14, 1920.

Proceedings of the American Society for Psychical Research

Vol. 14, 1920.

Proceedings of the Society for Psychical Research

Vol. 31, London 1920.

Guy Lockwood

Mastership or mediumship. Which?

Self published, Kalamazoo 1920.