Tridon, A.—Psychoanalysis, Its History, Theory and Practice. Huebsch.

See Chapter V: Symbols, the language of the dreams, and Chapter VI: The dreams of the human race.

Tridon, A.—Psychoanalysis and Behaviour. Knopf.

See part IV, chapter II: Self-knowledge through dream study.

Tridon, A.—Introduction to Freud’s “Dream Psychology.” McCann.

Vold, J. M.—Ueber den Traum. Leipzig 1910-1912.

Void holds that every dream is caused by a physical stimulus.

Vaschide, N.—Le Sommeil et les Rêves. Paris, 1911.

A physical explanation of sleep and dreams.