Facade of Santa Balbina on the Aventine

Graphite on paper

Gouache, black ink, and graphite on cream wove paper

Watercolor on cream wove paper

Colored marker on paper

Black and white chalks on buff wove paper

Graphite on blue paper

Black and white chalk on buff wove paper

Watercolor, gum arabic, and white gouache over graphite on off-white wove paper

Brown ink on off-white antique laid paper; verso: brown ink, brown wash, and red chalk

Charcoal on paper

Red chalk over black chalk on cream antique laid paper

Graphite on paper