Study for portrait of Derek Bok with terra cotta Madonna: seated figure facing right next to President's chair

White tempera on acetate, black ink on off-white and cream wove paper (collage)

Watercolor and red ink lines on white wove paper

Black crayon on paper and mounted

Graphite on paper

Graphite on off-white wove paper

Red and black conté crayon on ivory tracing paper

Graphite on off-white wove paper

Charcoal on blue laid paper

Mixed media on cardboard

Graphite on off-white wove paper

Graphite and charcoal on off-white wove paper; verso: graphite

Graphite on paper