Gerald Handerson Thayer

Concealing-coloration in the animal kingdom. An exposition of the laws of disguise through color and pattern: being a summary of Abbott H. Thayer's discoveries

The Macmillan Co., New York 1909.

Abbott Handerson Thayer

An arraignment of the theories of mimicry and warning colors

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

Theodore Roosevelt

Protective coloration

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