WattsOSSOStudy of a Female Nude, Seated1870 · Red and black chalkSheet: 8 7/16 x 11 1/4 in. (21.5 x 28.5 cm)The Metropolitan Museum of Art
WattsOSSFStudy for a Male Figure in "Comus–The Measure" (recto); Reclining Male Nude (verso)1864 · Black chalkSheet: 11 7/16 × 8 3/4 in. (29 × 22.2 cm)The Metropolitan Museum of Art
Portrait of a Woman1851 · watercolor with gouache and graphiteSheet: 43.1 x 34.7 cm (16 15/16 x 13 11/16 in.); Secondary Support: 51 x 43 cm (20 1/16 x 16 15/16 in.)Cleveland Museum of Art
A Farm near the Sea at Margate, Kent1850 · watercolor over graphite with gum arabicsheet: 17.9 × 26.2 cm (7 1/16 × 10 5/16 in.)National Gallery of Art
WattsOSSOStudy of a Tree1848 · WatercolorSheet: 8 7/8 x 7 5/16 in. (22.5 x 18.5 cm)The Metropolitan Museum of Art
Maatschappij tot Bevordering van Landbouw en Veeteelt in Zeeland, penning uitgereikt aan L. Klaassen1848 · striking (metalworking) on bronze (metal)diameter: 5.1 cm, weight: 57.77 cmRijksmuseum
Mrs. Anne Walbanke-Childers1843 · watercolor over graphite with gouache and gum arabic on wove paper, laid down on cardsheet: 52.7 × 38 cm (20 3/4 × 14 15/16 in.) mount: 64 × 49 cm (25 3/16 × 19 5/16 in.)National Gallery of Art