Study for portrait of Derek Bok against panelled wall with President's chair

Crayon on paper

Gray wash with graphite on off-white wove paper

Black ink and graphite on off-white wove paper

Watercolor and white gouache over graphite on off-white wove paper

Graphite on off-white wove paper mounted to cardboard

Graphite on off-white wove paper

Charcoal on cream laid paper

Graphite on off-white wove paper

Graphite and white pastel on blue-buff wove paper

Graphite on off-white wove paper

Black ink & gray wash over graphite on heavy off-white wove ppr; verso: graphite

Graphite on paper