Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Staircase: plan, sections, details, 1:20, 1:5

Charcoal on off-white laid paper

Transparent and opaque watercolor and charcoal on heavy white wove paper; verso: charcoal and graphite

Gouache on cream wove paper

Graphite on off-white wove paper

Charcoal on cream laid paper

Watercolor and white gouache on beige wove paper, mounted on buff wove card

Graphite and ink on paper

Collage of leaves and metallic strip on wove paper prepared with glossy opaque brown paint

Black crayon on thin off-white wove paper

Black ink and graphite on translucent vellum paper

Graphite and ink on paper

Graphite on off-white wove paper