lower left in plate: Painted by Wm Peters R.A.; lower center in plate: Published May 17. 1778 by J. Boydell, No. 90. Cheapside London; lower right in plate: Engraved by J.R. Smith; by later hand, lower right in graphite: P 1405 F222i/ii CS 187 i/ii
Christopher Lennox-Boyd; (C. G. Boerner Limited, New York); purchased 2002 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.
- C. G. Boerner Ltd. Mezzotints from the Collection of Christopher Lennox-Boyd. London, 2001: no. 48.