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

Graphite and gray wash on gesso prepared off-white wove paper, attached to two other sheets of off-white wove paper, cut and incised

Black ink and charcoal on cream laid paper

Graphite on off-white wove paper

Black ink on off-white wove paper

Black ink on lithographed lines on off-white wove paper

Crayon on paper

Graphite on paper

Charcoal on off-white wove paper; verso: graphite

Black ink and blue pencil on cream wove paper

Graphite on off-white wove paper

Black ink with blue, red, and black ground pigments on off-white antique laid paper