Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Sketch of plan

Crayon on paper

Charcoal and watercolor on off-white laid paper

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

Black ink and graphite on off-white wove paper

Black ink on off-white wove paper (recto and verso)

Black chalk on cream wove paper

Graphite and charcoal on white wove paper, laid down on card

Black ink on off-white wove paper

Sketchbook with black-leather-covered cardboard covers

Colored crayons

Graphite on paper

Watercolor over graphite on off-white wove paper