The American Magician

The Presto Co., New York 1910.

Theodore Roosevelt

Protective coloration

African Game Trails, Syndacate Publishing Company, New York 1910, pp. 552-568.

Burling Hull

Sealed mysteries: explaining the latest card mysteries and spirit tricks made public for the first time: with directions for constructing trick cards

Master Technic Publishing Co., New York 1911.

Nevil Maskelyne e David Devant

Our Magic

E.P. Dutton & Co., New York 1911.

Theodore Roosevelt

Revealing and concealing coloration in birds and mammals

Bulletin of the American Museum of Natural History, Vol. 30, American Museum of Natural History, New York 1911, pp. 119-231.

Abbott Handerson Thayer

Concealing coloration

Popular Science Monthly, Vol. 79, The Science Press, New York june 1911, pp. 20-35.