A.J. Finberg, A Complete Inventory of the Drawings of the Turner Bequest, London 1909, vol.I, p.574, as ‘ “The Aurora of Guido [in the hall of the Rospigliosi Palace] – the sky rather yellow like ... Light on a dark red ground on which he stiks his relievo excepting the orange drapery. The light lilac serves to detach the figure, but at the same time takes away all aerial quality from the sky which perhaps is too solid. The dark figure with golden Hair and light blue drapery is beautiful as to form, color and design. The drapery is the lightest colour in the picture, the greenish robe of the next figure second, the next a lilac robe and light drapery. The Apollo red Lake and comes off whole.: half is tone from the sky, &c.” ’.
Thomas Ashby, Turner’s Visions of Rome, London and New York 1925, p.15.
John Gage, Colour in Turner: Poetry and Truth, London 1969, pp.143, 259 note 75, 272 note 24.
Andrew Wilton, J.M.W. Turner: His Life and Work, Fribourg 1979, pp.139 and 151 note 15.
Cecilia Powell, ‘Turner on Classic Ground: His Visits to Central and Southern Italy and Related Paintings and Drawings’, unpublished Ph.D thesis, Courtauld Institute of Art, University of London 1984, pp.145 note 79, 151 and 484 note 1.
Cecilia Powell, Turner in the South: Rome, Naples, Florence, New Haven and London 1987, pp.59, 65, , 203 notes 1, 17 and 44.
Cecilia Powell, ‘Guido Reni’, in Evelyn Joll, Martin Butlin and Luke Herrmann (eds.), The Oxford Companion to J.M.W. Turner, Oxford 2001, p.257.