lower right in image, to right of urn: Painted by Sir Joshua Reynolds. / Engraved by Thos. Watson / Published Jany. 1st. 1776 for W: Shropshire No. 158 & T. Watson No. 142 New Bond Street
- 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.