Cliff Landscape with Waterfall at Lake Walenstadt with a Traveler in the Foreground

Black and white chalk, squared, on blue wove paper

Charcoal and white chalk, squared, on blue paper

Brown ink, brown wash and graphite on cream wove paper with scraping and lifting

Brown ink, gray and brown wash, and graphite on cream paper, borderline in black ink

Watercolor and graphite on cream wove paper; verso: graphite

Graphite on off-white paper

Black ink and gray wash

Brown ink and brown wash on cream wove paper

Brown ink and brown wash on cream wove paper

Graphite, black crayon, and white chalk on light brown paper

Brown ink, transparent and opaque watercolor, and black, white and red chalks on brown paper