Bernard Falk, Turner the Painter: His Hidden Life, London 1938, p.121.
Andrew Wilton, Turner in his Time, London 1987, p.84.
Ann Chumbley and Ian Warrell, Turner and the Human Figure: Studies of Contemporary Life, exhibition catalogue, Tate Gallery, London 1989, p.28 no.8, as D40021, ‘Sheet of erotic figure subjects’, c.1805, reproduced.
James Hamilton, Turner: A Life, London 1997, reproduced after p.110.
Robert Upstone in Alison Smith (ed.), Exposed: The Victorian Nude, exhibition catalogue, Tate Britain, London 2001, p.152 no.74, as ‘A Copulating Couple’, c.1805, reproduced in colour.
Andrew Wilton, Turner in his Time, revised ed., London 2006, p.85, as ‘Erotic figure subjects’, c.1805–10, reproduced in colour.
Ian Warrell, ‘Exploring the “Dark Side”: Ruskin and the Problem of Turner’s Erotica’, with ‘A Checklist of Erotic Sketches in the Turner Bequest’, British Art Journal, vol.4, no.1, Spring 2003, pp.12, 18–19, pl.11, as ‘Two studies of sexual activity’, c.1805–15.
Marina Wallace, Martin Kemp and Joanne Bernstein, Seduced: Art & Sex from Antiquity to Now, exhibition catalogue, Barbican Art Gallery, London 2007, reproduce in colour p.162, p.248 no number, as ‘Erotic Figure Studies’, c.1805.
Ian Warrell, Turner’s Secret Sketches, London 2012, p.78, as ‘The Amorous Nymph and Satyr: Two Studies of Sexual Activity’, c.1805–15, reproduced in colour pp.[80–1] (cropped).
Eric Shanes, Young Mr Turner: The First Forty Years, 1775–1815, New Haven and London 2016, pp.292, as c.1805–15, pp.484–5 note 7.