below image, lower left in plate: Sir Joshua Reynolds Pinxit; lower right in plate: T: Watson Fecit; lower center in plate: Published Sept. 24. 1785. by T Watson No 33. Strand London.; lower center in graphite: Bartolozzi Proof; lower left verso in graphite: proof / T N 15; lower right verso in graphite: 76
- 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.