The Devil's Bridge, St. Gothard Pass

Graphite and watercolor on off-white paper

Brown ink, brown wash, and graphite on thin cream wove paper

Graphite on heavy cream wove paper

Gray wash, graphite, black ink, black chalk, and watercolor on off-white antique laid paper

Red chalk on cream wove paper; verso: red chalk

Black ink on thin off-white wove tissue, darkened with the addition of an unknown substance (possibly oiled?), mounted on ivory wove paper

Graphite on cream paper

Graphite on heavy cream wove paper

Black, red, and white chalk on beige paper

Brown ink on cream paper

Red chalk, squared, on rice paper

Watercolor, black ink, graphite, and black chalk on off-white antique laid paper