Detail of Verification of the True Cross, after Piero della Francesca

Graphite on paper

Charcoal on cream wove paper

Black ink on off-white wove paper

Black ink, graphite, and yellow chalk on off-white wove paper; verso: black ink

Charcoal, oil stick, acrylic, and Liquid Paper on white wove paper

Graphite on off-white tracing paper

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

Sketchbook with brown cloth-covered cardboard covers

Watercolor and selectively applied glaze on off-white modern laid paper

Transparent and opaque watercolor, ink, metallic paint, pasted wood veneer, felted paper, and cut papers on paperboard

Watercolor and graphite on green wove paper

Graphite on paper