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

Crayon on paper

Acrylic paint on paper

Charcoal on tan wove paper

Watercolor and graphite on paper

Pastel on paper

Black ink on off-white wove paper

Watercolor

Graphite and colored pencils on architect's tracing paper

Watercolor on white wove paper

Black ink over graphite on cream wove paper

Oil pastel on cream wove paper

Graphite, ink, acrylic, on paper