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

Black ink and white crayon on orange wove paper

Graphite on paper

Watercolor over graphite on off-white wove paper, mounted to matboard

Watercolor and black chalk on off-white wove paper

Silk collage with acrylic paint and graphite mounted to cream wove paper

Graphite with charcoal on paper

Black ink on off-white wove paper

Black ink on cream wove paper

Graphite on paper

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

Graphite on paper

Black ink and white chalk