Anatomy study of two heads for portrait of Derek Bok : one showing musculature, one of skull

Graphite on off-white wove paper

Black ink on folded cream colored paper

Graphite on off-white wove paper

Red and black conté crayon on ivory tracing paper

Collage on board

Graphite on paper

Watercolor and black ink on ivory wove paper

Black ink on heavy off-white machine-made wove paper

Graphite on paper

Black ink on thin off-white wove paper

Graphite on paper

Charcoal and colored chalk on off-white Japanese paper