Letter 1751; Farington Biographical Note; Edwards 1808, p. 80; Smith 1828 [?], vol. 1, p. 141; J.T. Smith, A Book for a Rainy Day, 1845, pp. 3-4; Commemorative Catalogue 1934, p. 29, cat. 96, pl. XXXV; Waterhouse 1953, p. 174, pl. 128A; WGC, p. 151, pl. 2a; Sale cat., The Lyttelton Papers, Sotheby's London, 12 December 1978, p.101 (cat. 79)