1. Estimates derived from those of London and provincial titles, and extant Scottish titles, in the British Library (BL) catalogue: Michael Harris, ‘London Newspapers', in Michael F. Suarez and Michael L. Turner (eds),The Cambridge History of the Book in Britain, Volume 5:1695–1830 (Cambridge, 2009), p. 424; Victoria Gardner, ‘Newspaper Proprietors and the Business of Newspaper Publishing in England, 1760–1820’, PhD thesis, Oxford University, 2009, pp. 23–4; British Library Newspaper Library online catalogue, www.bl.uk, accessed 1 March 2013.
2. Jürgen Habermas,The Structural Transformation of the Public Sphere, trans. Thomas Burger (Cambridge, MA, 2003); John Brewer,Party Ideology and Popular Politics at the Accession of George III(Cambridge, 1976), esp. chapters 8 and 11; Hannah Barker,Newspapers, Politics, and Public Opinion in Late Eighteenth Century England(Oxford, 1998); Bob Harris,Politics and the Rise of the Press: Britain and France, 1620–1800 (London and New York, 1996); Kathleen Wilson,Sense of the People: Politics, Culture and Imperialism in England1715–1785 (Cambridge, 1995), esp. pp. 37–47, 108–14, 348–50.
3. Hannah Barker and Simon Burrows, ‘Introduction’,Press, Politics and the Public Sphere in Europe and North America1760–1820 (Cambridge, 2002), p. 1.