Biography
Brackman, Arnold C. 1980. A delicate arrangement: the strange case of Charles Darwin and Alfred Russel Wallace. New York: Times Books.
Brooks, John Langdon. 1984. Just before the origin: Alfred Russel Wallace's theory of evolution. New York: Columbia University Press.
George, Wilma B. 1964. Biologist philosopher: a study of the life and writings of Alfred Russel Wallace. London, New York, Abelard-Schuman
McKinney, H. Lewis. 1972. Wallace and natural selection. New Haven: Yale University Press. Wallace, Alfred Russel. 1969. A narrative of travels on the Amazon and Rio Negro, with an account of the native tribes, and observations on the climate geology, and natural history of the Amazon Valley, with a biographical introduction by the editor, 2nd ed.