Interior of the Trier Cathedral

Brown ink over graphite on white wove paper

Black ink and gray wash on off-white paper

Watercolor and black chalk on off-white wove paper; verso: brown wash

Watercolor

Watercolor and gouache on cream wove paper; partial framing line in graphite

Black chalk on off-white modern laid paper

Transparent watercolor and graphite on cream antique laid paper, framing line in black ink, mounted to cream antique laid paper

Watercolor over graphite on white paper

Graphite, brown and gray wash on cream paper, darkened

Charcoal and black chalk on off-white wove paper

Transparent and opaque watercolor with traces of charcoal on cream wove paper

Watercolor and gouache on off-white wove paper