lower center in plate: The Dutchess of Graftton 1683; lower left in plate: P. Lely pinxit; lower right in plate: J. Verkolje Fecit et Exc.
- 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.