Gustave Verbeek

Exciting Times at the Sea Shore

New York Herald, N. 36, New York 26 luglio 1904.

Gustave Verbeek

A Fish Story

New York Herald, N. 41, New York 31 luglio 1904.

Henry Ridgely Evans

Treweyism

The Open Court, N. 592, Vol. XIX, The Open Court Publishing Company, Chicago settembre 1905, pp. 523-537.

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.

Abbott Handerson Thayer

An arraignment of the theories of mimicry and warning colors

Popular Science Monthly, Vol. 75, The Science Press, New York dicembre 1909, pp. 550-570.

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

The Auk, Vol. 28, American Ornithologists' Union, gennaio 1911, pp. 146-148.

Thomas Barbour e John C. Phillips

Concealing Coloration Again

The Auk, Vol. 28, American Ornithologists' Union, aprile 1911, pp. 179-188.

Abbott Handerson Thayer

Concealing coloration

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