Pendentive, Central Bay of the Loggia, Villa Madama, Rome

Incised line and Aquarelle on white wove paper

Black ink and graphite on cream wove paper; verso: watercolor, black ink, and graphite

Graphite on buff wove paper

Graphite with scratchwork on white wove paper

Album with black cloth-covered cardboard covers

Graphite on paper

Watercolor and graphite on off-white wove paper

Graphite on paper

Graphite and ink on paper

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

Graphite on paper

Transparent and opaque watercolor and graphite on white wove paper