lower left in plate: Joannes Zoffanii pinxit 1772 / LONDON: Published by Rob.t Sayer, at No. 53 in Fleet Street, as the Act directs 2.d August 1773..; lower center in plate: The ROYAL ACADEMY of ARTS, instituted by the King in the Year 1768~Humbly dedicated to its ROYAL PATRON, by His MAJESTY'S most faithfull subject / Robert Sayer; lower left in plate: Richardus Earlom sculpsit, 1773
(R. E. Lewis, CA, 25 January 1991); Donald Vogler, Portland, OR; gift to NGA, 2017.
- 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: no. 1, undesc ii/ii
- Wessely, J. E. Richard Earlom: Verzeichniss seiner Radirungen und Schabkunstblätter. Hamburg, 1886, no. 102, ii/ii