Ziel River, near Biel, Switzerland

Colored chalk on heavy brown wove paper

Black ink and charcoal on beige wove paper

Watercolor over graphite on cream wove paper

Graphite on off-white wove paper

Graphite on paper

Charcoal on cream laid paper

Graphite on coated off-white wove paper

Graphite on paper

Ink, gouache, and staples on yellow and off-white wove paper collage elements on paperboard

Colored crayon on cream wove paper; verso: black ink and graphite

Black crayon on thin buff wove paper

Colored pencil, colored chalk, and graphite on brown cardboard