Ayala, Francisco Jose and Theodosius G. Dobzhansky (1974). Studies in Philosophy of Biology: Reduction and Related Problems. Berkeley and Los Angeles, University of California Press. The volume contains excellent chapters ob Donald T. Campbell and Karl Popper and others.
Dennett, Daniel Clement (1995). Darwin’s Dangerous Idea: Evolution and the Meanings of Life. Simon & Schuster. Keywords: Natural selection, Philosophy of Biological Evolution, Philosophy of Human Evolution.
Depew, David J. and Bruce H. Weber (1995). Darwinism Evolving: Systems Dynamics and the Genealogy of Natural Selection. Cambridge, Mass, MIT Press. Keywords: Evolution (Biology), Philosophy, History. The books presents a very good overview of the history of evolutionary theory with particular emphasis on Darwin's theory of natural selection. It is an excellent starting point for anyone interested in a philosophically-informed history of evolutionary though.
Hahlweg, Kai and C. A. Hooker (editors) (1989). Issues in Evolutionary Epistemology. Albany, State University of New York. The book contains excellent chapters by Donald Campbell, Ron Amundson and others.
Hull, David L (1973). Darwin and his Critics; The Reception of Darwin’s Theory of Evolution by the Scientific Community. Cambridge, Mass, Harvard University Press.
Hull, David L (1988). Science as a Process: An Evolutionary Account of the Social and Conceptual Development of Science. Chicago, University of Chicago Press. Thomas Kuhn's "The Structure of Scientific Revolutions" is the most widely read and cited book in the philosophy and sociology of science. If you want an philosophical foundation for an evolutionary view, this is the book you should read and not Kuhn. Hull delivers not only a philosophical foundation for evolutionary theories in the social sciences, but he also provides a wonderful case study of how a school of thought in the world of biological taxonomy won the competition among alternative approaches.
Hull, David L (1989). The Metaphysics of Evolution. Albany, State University of New York Press.
Sober, Elliot (1984). The Nature of Selection: Evolutionary Theory in Philosophical Focus. Cambridge, Mass, MIT Press. Keywords: Philosophy of Science, Philosophy of Evolution, Philosophy of Biological Evolution.
Toulmin, Stephen E. (1972). Human understanding: The Collective Use and Evolution of Concepts. Princeton, Princeton University Press.
Wilson, Edward O (1998). "The Biological Basis of Morality." Atlantic Monthly, April Issue, The famous biologist ventures into moral philosophy.