Claude Alexander Conlin

Dr. Q's Hypnotic Act

Thayer's Studio of Magic, Los Angeles 1944.

William Lindsay Gresham

Fortune Tellers Never Starve

Coronet, N. 4, Vol. 27, febbraio 1950, pp. 169-172.

Harry Collins

Magicians in the laboratory: a new role to play

New Scientist, 30 giugno 1983.

Marcello Truzzi

Reflections on Project Alpha: Scientific Experiment or Conjuror's Illusion?

The Zetetic Scholar, 1987.

Sidney J. Kolpas

David Copperfield's Orient Express Card Trick

The Mathematics Teacher, N. 7, Vol. 85, ottobre 1992, pp. 568-570.