WattsOSSOStudy of a Tree; verso: Study of Houses1832 · Graphitesheet: 8 3/8 x 6 15/16 in. (21.2 x 17.7 cm)The Metropolitan Museum of Art
A Portal of a Church1810 · Watercolor and brown ink, heightened with white opaque watercolor, on wove papersheet: 12 5/8 x 10 5/8 in. (32 x 27 cm)The Metropolitan Museum of Art
WattsOSAPA Portal of a Church1800 · Pen and brown ink, watercolor, heightened with white gouachesheet: 12 5/8 x 10 5/8 in. (32 x 27 cm)The Metropolitan Museum of Art
Pines in a Morning Fog1797 · watercolor over graphite on wove paperoverall: 21.2 x 20.5 cm (8 3/8 x 8 1/16 in.)National Gallery of Art