Himmelbelt, project, Perspective1974 · Graphite and color pencil on paper47 1/2 x 35 3/4" (120.7 x 90.8 cm)Museum of Modern Art
WattsOSIIImaginary Icicles over the Charles River, Boston, MA1972 · Print on acetate18 x 13" (45.7 x 33 cm)Museum of Modern Art
New York Birdcage-Imaginary Architecture, project, New York City, New York, Perspective from above and plan1968 · Colored pencil on architectural photo reproduction33 1/2 x 35 1/8" (85.1 x 89.2 cm)Museum of Modern Art
Elements of the Vertical City, project, Rome, Italy, Axonometric of crown1966 · Ink, graphite, and gouache on board36 x 28" (91.4 x 71.1 cm)Museum of Modern Art
Elements of the Vertical City, project, Rome, Italy, Axonometric of base1966 · Ink, graphite, and gouache on board36 x 28" (91.4 x 71.1 cm)Museum of Modern Art
Elements of the Vertical City, project, Rome, Italy, Axonometric of torso1966 · Ink, graphite, and gouache on board36 x 28" (91.4 x 71.1 cm)Museum of Modern Art
WattsOSEOElements of the Vertical City, project, Rome, Italy1965 · Graphite and ink on cardboardEach: 36 x 28" (91.4 x 71.1 cm)Museum of Modern Art