Study of head for portrait of Derek Bok, facing right

Black ink and gray wash on cream laid paper

Black fiber-tip ink on off-white wove paper

Graphite on thin off-white wove paper

Red crayon, red wash, and graphite on cream wove paper

Graphite on paper

Graphite on off-white wove paper

Oil on tracing paper

Pen and ink on paper

Black ink and gray wash on cream laid paper

Charcoal and white chalk on blue laid paper

Pastel on ground of gold paint on cardboard

Graphite on off-white wove paper