1. R. Keynes (ed.) Charles Darwin's zoology notes & specimen lists from H.M.S. Beagle (Cambridge University Press 2000).
2. N. Barlow (ed.) The autobiography of Charles Darwin 1809–1882: with original omissions restored (Collins London 1958).
3. F. Darwin (ed.) The life and letters of Charles Darwin (3 volumes) (John Murray London 1887).
4. R. B. Freeman (ed.) The works of Charles Darwin: an annotated bibliographical handlist 2nd edn (Dawson Folkestone 1977).