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

Graphite on off-white wove paper

Graphite on off-white wove paper

Black ink, charcoal, watercolor, and watercolor pencil on cream laid paper, edges taped

Watercolor on cream wove paper

Black ink and gray wash on cream laid paper

Black ink on cream wove paper; verso: black ink and graphite

Watercolor and white gouache over graphite on heavy off-white wove paper

Black ink and graphite on thin buff wove paper

Graphite on paper

Pastel, black and gray wash and collage on white wove paper

Charcoal on off-white wove paper

Graphite on paper