1. Amateurs and professionals in one county: Biology and natural history in late Victorian Yorkshire;Alberti;Journal of the History of Biology,2001
2. Anon. ([1936]). Catalogue of a loan exhibition of historic scientific apparatus in Cambridge, arranged under the auspices of the Cambridge Philosophical Society in the East Room of the Old Schools, 8–23 June 1936. (Unpublished pamphlet, copy held at the Whipple Museum, University of Cambridge)
3. Barrett, P. H., Gautrey, P. J., Herbert, S., Kohn, D., & Smith, S. (Eds.). (1987) Charles Darwin’s notebooks, 1836–1844: Geology, transmutation of species, metaphysical enquiries. Cambridge: Cambridge University Press.
4. Joseph Dalton Hooker’s ideals for a professional man of science;Bellon;Journal of the History of Biology,2001
5. The biological sciences in the twentieth century;Borell,1989