WattsOSTOThe Oracle1774 · MezzotintSheet (trimmed to image): 20 1/16 × 23 7/16 in. (51 × 59.5 cm)The Metropolitan Museum of Art
WattsOSTTThe Tea-Tax-Tempest (The Oracle)1774 · Mezzotint with gouache; scratched proofSheet (trimmed within plate): 20 1/2 × 23 3/8 in. (52.1 × 59.4 cm)The Metropolitan Museum of Art
The Tea-Tax-Tempest (The Oracle)1774 · Mezzotint with gouache; scratched proofSheet (trimmed within plate): 20 1/2 × 23 3/8 in. (52.1 × 59.4 cm)The Metropolitan Museum of Art
The Oracle1774 · MezzotintSheet (trimmed to image): 20 1/16 × 23 7/16 in. (51 × 59.5 cm)The Metropolitan Museum of Art
William John, Earl of Ancrum1773 · Mezzotint in black on ivory laid paper, discolored to tanImage: 51.3 × 60.6 cm (20 1/4 × 23 7/8 in.); Plate: 54.3 × 60.6 cm (21 7/16 × 23 7/8 in.); Sheet: 57.5 × 69.2 cm (22 11/16 × 27 1/4 in.)Art Institute of Chicago
An Incantation1772 · Mezzotint with touches of engraving in black on ivory laid paperImage/plate: 61 × 48.5 cm (24 1/16 × 19 1/8 in.); Sheet: 66.9 × 51.5 cm (26 3/8 × 20 5/16 in.)Art Institute of Chicago
Mr. Garrick in "Richard the Third"1772 · Mezzotint on cream laid paperImage/plate: 63.5 × 40 cm (25 × 15 3/4 in.); Sheet: 71.6 × 53.9 cm (28 1/4 × 21 1/4 in.)Art Institute of Chicago
Charles Townshend1770 · Mezzotint on paperSheet: 41.7 x 29.6 cm (16 7/16 x 11 5/8")National Portrait Gallery