1909
A.J. Finberg, A Complete Inventory of the Drawings of the Turner Bequest, London 1909, vol.I, p.499, as ‘Do. [Two landscapes.] “Poggio – approaching”, and “Spoleto” ’.
1968
Giovanni Carandente, ‘Un Viaggio di Turner in Umbria’, Spoletium: Rivista di arte, storia e cultura, 13, April 1968, p.16, reproduced fig.2, p.14, as ‘Spoleto’.
1984
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Powell, ‘Turner on Classic Ground: His Visits to Central and Southern Italy and Related Paintings and Drawings’, unpublished Ph.D thesis, Courtauld Institute of Art, University of London 1984, p.462 note 66.
1987
Cecilia Powell, Turner in the South: Rome, Naples, Florence, New Haven and London 1987, p.26.