1903
E.T. Cook and Alexander Wedderburn (eds.), Library Edition: The Works of John Ruskin: Volume I: Early Prose Writings 1834–1843, London 1903, pp.233, 244.
1904
E.T. Cook and Alexander Wedderburn (eds.), Library Edition: The Works of John Ruskin: Volume XIII: Turner: The Harbours of England; Catalogues and Notes, London 1904, pp.380–1.
1906
E.T. Cook and Alexander Wedderburn (eds.), Library Edition: The Works of John Ruskin: Volume XXI: The Ruskin Art Collection at Oxford, London 1906, p.214.
1909
A.J. Finberg, A Complete Inventory of the Drawings in the Turner Bequest, London 1909, vol.II, p.891, as ‘The Simplon’.
1993
Jan Piggott, Turner’s Vignettes, exhibition catalogue, Tate Gallery, London 1993, p.95.