Target (Spectrum) c. 1953 Casein on panel 15 × 15 inches; 38 × 38 cm
The New York Times
Untitled c. 1950 Oil, enamel, and wax on paper mounted to board in artist’s frame
Sphere (Circle) c. 1955 Oil and dry pigment on panel
Target c. 1953 Casein on panel
Target (Yellow Flare) c. 1953 Casein on panel
Target (Spectrum) c. 1953 Casein on panel
Untitled c. 1959 Casein and tempera on board in artist’s frame
Target (Black) c. 1953 Casein on panel
Blue Sphere c. 1955 Oil and dry pigment on panel
Spiral Hall c. 1961 Oil and pastel on panel
Nebula c. 1965 Oil and dry pigment on panel
Shooting Nebula c. 1965 Oil and dry pigment on panel
Test Nebula c. 1965 Oil and dry pigment on panel
Untitled c. 1965 Oil, dry pigment, and pastel on panel, four parts
Strata c. 1965 Oil and dry pigment on panel
Porazzo Polyhedra c. 1965 Casein, tempera, and pastel on board
Untitled c. 1965 Casein and tempera on board