Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Staircase: section, 1:50

Watercolor and graphite on white wove paper

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

Watercolor and graphite on layered off-white wove paper

Oil and black ink on wove paper

Graphite on paper

Graphite on off-white wove paper

Graphite on paper

Graphite on cream tracing paper

Tempera on acetate over brown and green tissue paper collage elements, and black ink on Japanese paper

Charcoal with erasure and stumping on off-white wove paper

Watercolor and gouache over graphite on off-white wove paper

Watercolor on off-white wove paper