Study for portrait of Derek Bok in front of triptych with President's chair

Graphite and charcoal on paper

Graphite on off-white wove paper

Beeswax, graphite, detritus and debris on wove paper

Black ink, gray and white gouache, graphite, spots of turquoise ink, on cream wove paper; verso: black ink

Charcoal and graphite on off-white laid paper

Watercolor and graphite on white wove paper

Watercolor over graphite on off-white wove paper, mounted to off-white card

Watercolor on off-white wove paper

Graphite and colored wax crayons with stumping on off-white wove paper edged with lavender paper on left and right sides

Watercolor, graphite and colored crayon on off-white wove paper

Graphite, black ink, and blue ball-point ink on off-white wove graph paper

Watercolor and graphite on cream wove paper