1820
A.J. Finberg, A Complete Inventory of the Drawings of the Turner Bequest, London 1909, vol.II, p.834, CCLXIII 259, as ‘The gateway’, c.1820–30.
1820
Diane Perkins, The Third Decade: Turner Watercolours 1810–1820, exhibition catalogue, Tate Gallery, London 1990, reproduced in colour p.17, p.34 no.29, as ‘Boppart; Colour Study’, ?c.1820, reproduced.
1819
Cecilia Powell, Turner’s Rivers of Europe: The Rhine, Meuse and Mosel, exhibition catalogue, Tate Gallery, London 1991, p.107 no.14, as ‘Boppard: Colour Study’, c.1819, reproduced.
1995
Cecilia Powell, Turner in Germany, exhibition catalogue, Tate Gallery, London 1995, pp.29, 77 note 59.
1820
Sketching the Sky: Watercolours from the Turner Bequest, exhibition catalogue, Tate Gallery, London 1995, p.[5] no number, as ‘Boppard on the Rhine: Colour Study’, ?1820.
1997
Eric Shanes, Turner’s Watercolour Explorations 1810–1842, exhibition catalogue, Tate Gallery, London 1997, p.97 Appendix I ‘Germany’.