Edouard-Joseph Raynaly

Albert Ferdinand Guyot De Thorcey (1853-1937)

L'illusionniste, N. 56, agosto 1906, pp. 486-487.

Julius F. Sachse

Jacob Philadelphia, mystic and physicist

Publications of the American Jewish Historical Society, N. 16, American Jewish Historical Society, 1907, pp. 73-94.

Edmund H. Wilkie

Optical illusions

The Magician Annual, 1908, pp. 20-33.