1909
A.J. Finberg, A Complete Inventory of the Drawings of the Turner Bequest, London 1909, vol.I, p.291, CVIII 85a, as ‘Diagram and notes’.
1969
John Gage, Colour in Turner: Poetry and Truth, London 1969, pp.178, 252 note 217.
1987
John Gage, J.M.W. Turner: ‘A Wonderful Range of Mind’, New Haven and London 1987, p.247 note 74.
1992
Maurice Davies, Turner as Professor: The Artist and Linear Perspective, exhibition catalogue, Tate Gallery, London 1992, pp.51, 108 note 85.
1994
Maurice William Davies, ‘J.M.W. Turner’s Approach to Perspective in his Royal Academy Lectures of 1811’, unpublished Ph.D thesis, Courtauld Institute of Art, London 1994, p.289.