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

Watercolor on off-white wove paper

Opaque watercolor on purple construction paper

Black ink and yellow chalk on translucent buff wove paper

Black ink, graphite, and yellow chalk on off-white wove paper

Charcoal, oil stick, acrylic, and Liquid Paper on white wove paper

Watercolor over graphite on off-white card

Graphite on off-white wove paper

Black crayon on off-white laid paper

Watercolor and white gouache on rough brown wove paper

Black chalk and charcoal on off-white laid paper

Graphite on paper

Graphite on off-white wove paper