1. E. Royle (1974) Victorian Infidels: The Origins of the British Secularist Movement, 1791–1866 (Manchester: University of Manchester Press); and E. Royle (1980) Radicals, Secularists, and Republicans: Popular Freethought in Britain, 1866–1915 (Manchester: University of Manchester Press).
2. Recent studies on Secularism that have at least addressed the relationship of Secularism to the secular, secularization and secularism considered more broadly include L. Schwartz (2013) Infidel Feminism: Secularism, Religion and Women’s Emancipation, England 1830–1914 (Manchester, UK: Manchester University Press), pp. 18–22; and M. Rectenwald (2013) ‘Secularism and the Cultures of Nineteenth-Century Scientific Naturalism’, British Journal for the History of Science 46.2, 231–54, at 232.
3. E. Royle (1980) Radicals, Secularists, and Republicans, pp. xi–xii.
4. O. Chadwick (1975) The Secularization of the European Mind in the Nineteenth Century (Cambridge, UK: Cambridge University Press), pp. 88–106.
5. C. Taylor (2007) A Secular Age (Cambridge, MA: Belknap Press of Harvard University Press).