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

Conté crayon, charcoal, graphite, and collaged paper on white wove paper

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

Ink, graphite and tempera paint on two joined sheets of thin white wove paper

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

Watercolor on off-white wove paper

Black conté crayon on buff laid paper

Graphite on white wove translucent paper

Watercolor on paper

Watercolor on paper

Black and brown marker on graph paper

Printer's ink and acrylic paint on cream wove paper

Watercolor over graphite on off-white wove paper