lower left in plate: Tho. Gainsborough Pinxt.; lower center in plate: To His Royal Highness GEORGE Prince of Wales. This Plate of Col. St. Leger; is most humbly Inscribed / by His Highness' dutifull Servant, G. Dupont. / Publish'd as the Act directs, May 4th., 1783, by G. Dupont, No 87, Pall Mall.; lower right in plate: G. Dupont Sculpt.
Christopher Lennox-Boyd; (C. G. Boerner Limited, New York); purchased 2001 by NGA.
- Smith, John Chaloner. British mezzotinto portraits, being a descriptive catalogue of these engravings from the introduction of the art to the early part of the present century. 4 vols. London: Henry Sotheran and Co., 1884.
- Russell, Charles Edward. English Mezzotint Portraits and Their States. 2 vols. London: Halton and Truscott Smith, Ltd., 1926.
- C. G. Boerner Ltd. Mezzotints from the Collection of Christopher Lennox-Boyd. London, 2001: no. 61.