1909
A.J. Finberg, A Complete Inventory of the Drawings of the Turner Bequest, London 1909, vol.I, p.451, CLVIII 6, as ‘Do.’ (i.e. ditto: ‘Study of sky’).
1969
John Gage, A Decade of English Naturalism 1810–1820, exhibition catalogue, Norwich Castle Museum 1969, reproduced p.34.
1990
Peter Bower, Turner’s Papers: A Study of the Manufacture, Selection and Use of his Drawing Papers 1787–1820, exhibition catalogue, Tate Gallery, London 1990, p.101 note 1.
2016
David Blayney Brown, J.M.W. Turner: The ‘Skies’ Sketchbook, London 2016, reproduced in colour p.[31].