A.J. Finberg, A Complete Inventory of the Drawings of the Turner Bequest, London 1909, vol.I, p.528 as ‘A hilly landscape, &c. (probably Tivoli). “Grey Castle. Claude”; also sketch of Plautian Tomb, Tivoli’.
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Powell, ‘Turner on Classic Ground: His Visits to Central and Southern Italy and Related Paintings and Drawings’, unpublished Ph.D thesis, Courtauld Institute of Art, University of London 1984, pp.174 note 17, 176 note 25.
Jack Lindsay, Turner: The Man and His Art, London 1985, p.96.
Gerald Wilkinson, Turner Sketches 1789–1820, London 1977, p..
Cecilia Powell, Turner in the South: Rome, Naples, Florence, New Haven and London 1987, pp.74 note 5,  note 15.
Kathleen Nicholson, Turner’s Classical Landscapes: Myth and Meaning, Princeton 1990, p.262 [as CLXXIX 41–41a in error].
Ian Warrell, Turner et le Lorrain, exhibition catalogue, Musée des beaux-arts, Nancy 2002, no.41, pp.95, 191, reproduced, as ‘View of Tivoli (with a detail of the Tomb of the Plautii)’.
David Hill, ‘J.M.W. Turner: From the World to Art and Back Again: The 2003 Kurt Pantzer Memorial Lecture’, in Turner Society News, no.95, December 2003, pp.12, 16 note 32.