Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Penthouse floor plan, 1:100

Colored crayon on white wove paper

Graphite on ivory laid paper

Crayon on paper

Black ink on off-white wove paper

Turpentine wash with oil on cream laid paper

Black ink and touches of graphite on white wove paper, mounted to cardboard

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

Charcoal on blue laid paper

Black crayon on thin off-white wove paper

Graphite on ivory laid paper

Watercolor on paper

Watercolor over graphite on illustration board