WattsOSCCorrugation1979 · Painted aluminum, in twenty parts68 1/2 x 36 1/4 x 37" (174 x 92 x 94 cm)Museum of Modern Art
WattsOSIFIlluminated Fragments1978 · EtchingPlate: 21 x 20 13/16" (53.3 x 52.8 cm)Museum of Modern Art
WattsOSHGHollow Ground I1977 · Charcoal on paper25 1/4 x 35 3/8" (64.1 x 89.7 cm)Museum of Modern Art
WattsOSHGHollow Ground II1977 · Charcoal on paper25 1/4 x 35 3/8" (64.1 x 89.8 cm)Museum of Modern Art