General View and Details, Sala Delle Stampe, Borgia Apartments, Vatican

Graphite on paper

Graphite on off-white wove paper

Colored chalk on light-blue laid paper (recto and verso)

Crayon on paper

Graphite on tracing paper

Graphite and charcoal on cardboard

Graphite on cream wove paper

Album with blue cloth-covered cardboard covers

Graphite on off-white tracing paper

Black ink, graphite, yellow chalk on off-white wove paper

Graphite on off-white wove paper

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