1. Anon. (1851) ‘Forms of Infidelity in the Nineteenth Century’, The North British Review 15.29, 35–56, at 52.
2. W. Robbins (1966) The Newman Brothers: An Essay in Comparative Intellectual Biography (London: Heinemann Educational Books).
3. B. Willey (1956) ‘Francis W. Newman’, More Nineteenth-Century Studies: A Group of Honest Doubters (New York: Harper & Row), p. 11; hereafter referred to as Honest Doubters.
4. J. M. Wheeler (1891) ‘Biographical Sketch’, in C. R. Newman, G. J. Holyoake, and J. M. Wheeler (eds) Essays on Rationalism: By Charles Robert Newman … With Preface by George Jacob Holyoake. And Biographical Sketch by J.M. Wheeler (London: Progressive Pub. Co.), p. 9.
5. D. Hempton (2008) Evangelical Disenchantment: Nine Portraits of Faith and Doubt (New Haven and London: Yale University Press), p. 13.