View of the Tiber Valley with the Ponte Molle (after Ricci)

Graphite on white antique laid paper

Brown ink and gray wash, and some graphite, on off-white antique laid paper

Brown ink and brown and gray wash over black chalk on cream laid paper

Black and white chalk on grey prepared paper

Black ink and gray wash, over black chalk, on off-white antique laid paper

Brown ink, brown and gray wash, and white gouache over graphite and black chalk on cream antique laid paper

Black chalk on cream wove paper

Black and white chalk on gray prepared wove paper

Black ink with gray wash on cream antique laid paper

Brown ink and black chalk on cream antique laid paper

Brown ink and gray wash on cream antique laid paper

Graphite on pale blue-gray antique laid paper