Certificate for Wall Drawing #830 (Four Isometric Figures With Color Ink Washes Superimposed)

Graphite on paper

Charcoal on cream laid paper

Black and brown ink and graphite on cream wove paper

Black and blue ballpoint ink and graphite on off-white wove paper

Graphite and colored pencil on paper

Black ink on tan wove paper

Watercolor over graphite on off-white wove paper

Graphite on off-white tracing paper

Watercolor and white gouache over graphite on heavy cream wove paper

Black felt-tipped pen on yellowed newsprint paper

Watercolor and graphite on white wove paper

Graphite on cream wove paper