lower edge within platemark: published as the Act directs Jan 25, 1780 REVENGEFUL MONSTERS. by J. Mortimer, Norfolk Street Strand; lower right below image: I. Mortimer Del et Sculp.
(William Weston Gallery, London, 8 July 1985); Donald Vogler, Portland, OR; gift to NGA, 2017.
- Sunderland, John. "John Hamilton Mortimer: His Life and Works," Walpole Society 52 (1988): no. 183a