Study for portrait of Derek Bok against panelled wall with "The Great Salt"

Black ink on dark blue wove paper

Pastel on cardboard

Sketchbook with brown cloth-covered cardboard covers

Black ink on off-white wove paper

Oil on white prepared paper

Graphite on off-white wove paper

Sketchbook with beige-fabric-covered cardboard covers

Metallic paint, watercolor, and black ink over graphite on cream wove paper; album leaf: graphite

Black ink over graphite on off-white wove paper

Graphite on off-white wove paper

Black ink on cream wove paper

Black ball-point ink on buff modern laid paper