Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: North entrance: plan, elevations, section, 1:20, 1:10

Black ink and wash with touches of white and rose gouache on buff wove paper

Watercolor on off-white wove paper

Graphite on off-white wove paper

Transparent and opaque watercolor on white wove paper

Charcoal on blue laid paper

Watercolor on off-white wove paper

Collage and watercolor

Black ink and graphite on off-white wove paper

Graphite on paper

Graphite, red pencil, and blue ballpoint ink on thin white wove paper

Graphite on off-white wove paper

Graphite on cream wove paper