Gustave Verbeek

The Thrilling Adventure of the Dragon

New York Herald, N. 29, New York 8 maggio 1904.

Gustave Verbeek

The Fairy Palace

New York Herald, N. 33, New York 5 giugno 1904.

Gustave Verbeek

The Mermaid and the Floating Mine

New York Herald, N. 37, New York 3 luglio 1904.

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.

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

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

Homer Saint Gaudens

Camouflage and Art

The Art Bulletin, N. 1, Vol. 2, College Art Association of America, New York settembre 1919, pp. 23-30.