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

Graphite on paper

Graphite and metallic pencil on white wove translucent paper

Black ink on off-white wove paper

Charcoal on off-white laid paper

Watercolor on gampi paper

C-print (magenta color separation) mounted on foam-core with ball-point ink notations, black ink grid, and acrylic airbrush marks

Watercolor on cream card

Graphite on darkened off-white wove paper

Watercolor over graphite on heavy off-white wove paper

Watercolor on off-white wove paper

Charcoal on off-white laid paper

Watercolor over graphite on buff wove paper