Study for portrait of Derek Bok with " Perugino" triptych in background: seated figure facing right with chair

Black ink on cream wove paper

Watercolor and graphite on cream wove paper

Graphite on off-white wove paper

Cast paper

Watercolor on off-white wove paper

Black felt-tipped pen on yellowed newsprint paper

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

Gray wash on cream laid paper, mounted to dark brown wove paper

Black ink and gray wash over chalk on off-white wove paper

Graphite on darkened off-white wove paper

Graphite on off-white wove paper

Graphite, watercolor and red crayon on cream wove paper