Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Sketches

Watercolor and white gouache over graphite on off-white illustration board

Black crayon on paper

Black ink on hand made rag wove paper

Black ink and gray wash with corrections in white on off-white cardboard

Graphite on thin off-white tracing paper

Graphite on off-white wove paper

Black ink on off-white laid paper

Gouache on cream wove paper

Graphite on paper

Crayon on paper

Black crayon on off-white wove paper

Black ink and white gouache on cream wove paper