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

Graphite on off-white wove paper

Charcoal on blue laid paper

Pastel on off-white wove paper

Graphite on translucent wove paper

Spiral bound sketchbook

Charcoal on beige laid paper

Black ink on off-white wove paper

Black ink and touches of graphite on white wove paper, mounted to cardboard

Graphite on paper

pen, ink on brown paper

Transparent and opaque watercolor and graphite on heavy off-white wove paper

Incised line and Aquarelle on white wove paper