lower left in plate: J Reynolds pinxt.; lower right in plate: J. McArdell fecit; lower center in plate: John Lockhart Esq / Late Commander of His Majesty's Ship Tartar.
Mrs. E. M. Hamilton (not in Lugt). Chirstopher Lennox-Boyd; (Nicholas Stogdon, Oxford); purchased 2001 by NGA.
- 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.