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

Graphite on paper

Graphite on blue laid paper

Graphite on cream wove paper

Oil and watercolor over graphite on cream wove paper

Black ink and brown chalk on blue laid paper, mounted to cardboard

Charcoal and graphite on off-white laid paper

Paper

Black ink, watercolor, and metallic paint over graphite on buff wove paper

Charcoal on blue-flecked beige laid paper

Charcoal and watercolor on cream laid paper

Charcoal on off-white laid paper

Graphite on paper