George C. Williams
George C. Williams (1926-2010), an evolutionary biologist, whose highly influential book, Adaptation and Natural Selection, argued for natural selection acting at the level of the gene or the individual organism as opposed to the group or species.  
- Zimmer C. (2004) George C. Williams Profile. Science 304:1235-1236. | "Stretching the Limits of Evolutionary Biology".
- Meyer A. (2010) George C. Williams (1926-2010). Nature 467:790. Obituary. | "Incisive thinker who influenced a generation of evolutionary biologists".
- Dawkins R. (2010) George C. Williams (1926–2010). Retrospective. Science 330:49. | "Williams, like Darwin, was a world-class thinker."