lower left in plate: .TF.; lower center in plate: .Ipse.; lower left in plate: T, Frye Pictor Inv,t & Sculp; lower right in plate: Hatton Garden 1760.
- Recent Acquisitions of Works of Art on Paper, National Gallery of Art, Washington, 1995.
- 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.