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

Graphite on paper

Black ink on cream wove paper

Black crayon on paper

Black ink on off-white wove paper

Graphite on green wove paper

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

Colored pencil on off-white card

Black ink, brown and gray watercolor on cream wove paper

Black and colored crayon on paper

Black and colored chalks on brown laid paper

Crayon on paper

Graphite and gesso on paper