WattsOSAPA Phenomenon1967 · Etching, aquatint and rouletteplate: 19 1/2 x 23 1/2" (49.6 x 59.7 cm); sheet: 25 3/4 x 30 3/4" (65.4 x 78.1 cm)Museum of Modern Art
WattsOSALA Labyrinth1967 · Etching and aquatintplate: 23 7/16 x 19 1/2" (59.6 x 49.6 cm); sheet: 30 5/8 x 25 9/16" (77.8 x 65 cm)Museum of Modern Art
WattsOSPMPERPETUAL MOTION1966 · Etching and aquatint, printed in black and colorPlate 19 3/4 x 15 5/8" (50.2 x 39.7 cm)Sheet 27 7/8 x 21" (70.8 x 53.4 cm)Museum of Modern Art
Sundial1965 · Color etching and aquatint on ivory wove paperImage/plate: 39.1 × 49.4 cm (15 7/16 × 19 1/2 in.); Sheet: 56 × 57.8 cm (22 1/16 × 22 13/16 in.)Art Institute of Chicago
Still Life1965 · Color etching and aquatint on white wove paperImage/plate: 34.5 × 49.6 cm (13 5/8 × 19 9/16 in.); Sheet: 53.5 × 79.2 cm (21 1/8 × 31 3/16 in.)Art Institute of Chicago
Three Jars1964 · Color etching on white wove paperImage/plate: 36.6 × 50 cm (14 7/16 × 19 11/16 in.); Sheet: 53.2 × 70.6 cm (21 × 27 13/16 in.)Art Institute of Chicago
WattsOSVRVICTORIA REGINA1959 · Etching, printed in black and colorPlate 16 3/4 x 21 9/16" (42.5 x 54.8 cm) Comp. 21 1/4 x 30 1/16" (54.0 x 76.3 cm)Museum of Modern Art
Concert1956 · Etchingplate: 17 3/16 x 13 1/4" (43.7 x 33.6cm); sheet: 19 3/8 x 14 1/8" (49.2 x 35.9cm)Museum of Modern Art