Detail of Philosophy, after Raphael, Vatican Palace, Rome, Italy

Black and red conté crayon on ivory tracing paper

Oil and gouache on off-white wove paper

Graphite on off-white wove paper

Graphite, colored crayons and felt tip ink on white wove paper

Black and colored crayon on off-white wove paper

Graphite and white gouache on tan wove paper

Charcoal and white chalk on buff wove paper

Graphite on off-white wove paper

Black ink, gray wash and red watercolor wash on thin cream wove paper

Graphite on cream wove paper

Graphite on paper

Graphite sketch on white printed stationery