Portrait of a Lady1790 · Watercolor on ivory6.8 × 5.4 cm (2 11/16 × 2 1/8 in.); Framed including loop: 8.6 × 6.2 cm (3 7/16 × 2 1/2 in.)Art Institute of Chicago
Portrait of Colonel George William Mignon1785 · Watercolor on ivory6.5 × 5.2 cm (2 9/16 × 2 1/16 in.); Framed: 8.9 × 6 cm (3 1/2 × 2 3/8 in.)Art Institute of Chicago