Joshua Reynolds, MS pocket books (Royal Academy of Arts, London): sittings for 8th September, 8th, 11th and 15th November 1773; 8th September 1777; 12th and 18th February 1779; CR Leslie and T Taylor, Life & Times of Sir Joshua Reynolds, London 1865, vol. II, pp. 48, 55; A Graves and WV Cronin, A History of the Works of Sir Joshua Reynolds, London 1899-1901, vol. II, p. 679; J L Clifford, Hester Lynch Piozzi (Mrs Thrale), 2nd edn, Oxford 1952, p. 442, note 1; M Hyde, The Thrales of Streatham Park, Cambridge, MA and London 1977, pp. 180, 300; M Hyde, 'The Library Portraits at Streatham Park', The New Rambler (Journal of the Johnson Society of London), Serial C, no. XX, 1979, pp. 14, 16, 22-24; Agnew's Picture Stockbook, no. 4; P H Highfill et al., A Biographical Dictionary of Actors, Actresses, Musicians, Dancers, Managers & Other Stage Personnel, Carbondale 1984, vol. 10, p. 399; The Piozzi Letters: Correspondence of Hester Lynch Piozzi, 1784-1821 (formerly Mrs Thrale), vol. 5, 1811-1816, Cranbury, NJ and London 1999, pp. 477-8, 482, 484, 490-1, 493, 539; vol. 6, 1817-1821, 2002, pp. 84, 250-1, 253, 255-7; D Mannings, Sir Joshua Reynolds: A Complete Catalogue of his Paintings, New Haven and London 2000, text vol. p. 347, no. 1312; plates vol., p. 440, fig. 1098 Ferrara, Palazzo dei Diamenti and London, Tate Britain, Joshua Reynolds: the Creation of Celebrity, 2005, exh. cat. ed. by Martin Postle, p. 165. Engraved: by F. Bromley, 1862 KEY TO FIG. 1 (from left to right) Top Row Edwin, 2nd Baron Sandys (Private Collection) William Henry Lyttleton, Lord Westcote (Viscount Cobham) Arthur Murphy (the present lot) 2nd Row Oliver Goldsmith (National Gallery of Ireland) Sir Joshua Reynolds (Tate Gallery) Sir Robert Chambers (Private Collection) 3rd Row David Garrick (The Houghton Library, Harvard) Henry Thrale (The Houghton Library, Harvard) Guiseppe Baretti (Private Collection) Bottom Row Dr Charles Burney (National Portrait Gallery) Edmund Burke (Scottish National Portrait Gallery) Dr Samuel Johnson (Tate Gallery)