Untitled (Study for "15 Serial Rows of Equal Amounts of Color with Bright Emphasis")

Graphite on mat board

Gray ink on laid paper mounted on board

Pastel on paper

Graphite on white card

Watercolor on white wove paper

Graphite and colored pencils on off-white wove paper

Oil pastel on cream wove paper

Red and brown oil and white gouache on cream wove paper

Mixed media on paper

Graphite and colored pencils on architect's tracing paper

Black crayon on white wove paper

Black ink and graphite on cream wove paper