John Chaloner Smith, British mezzotinto portraits, being a descriptive catalogue of these engravings from the introduction of the art to the early part of the present century : arranged according to the engravers, the inscriptions given at full length, and the variations of state precisely set forth : acc , Martino Pub., Mansfield Centre, CT, 2004, v. 4, p. 1646, Young no. 79, NE1816.G7 S58 2004