1. Allen D.E. (1976) The Naturalist in Britain: A Social History (Harmondsworth, Penguin, London), p 159.
2. Andrews H.N. (1980) The fossil hunters: In Search of Ancient Plants (Cornell University Press, Ithaca, NY).
3. Obituary: Thomas Hick;ANON;Natural Science,1896
4. (1908) Radcliffe and District Literary and Scientific Society, Coming of Age Souvenir, p 17. ANON.
5. (August 23, 1913) Rochdale Observer, Tragic death of Mr W.H. Sutcliffe. ANON.