John Chaloner Smith British Mezzotinto Portraits...from the introduction of the art to the early part of the present century. Henry Sotheran & Company, vols. 1-4, 1878–83, vol. III, p. 1260, no. 45 i.
Julia Frankau John Raphael Smith: His Life and Works. London, 1902, cat. no. 89 i/iv, pp. 96-7.
Charles E. Russell English Mezzotinto Portraits and Their States. vol. II, London and New York, 1926, cat. no. 45, p. 285.
Ellen D'Oench "Copper into Gold": Prints by John Raphael Smith, 1751–1812. New Haven and London, 1999, cat. no. 146, p. 206.