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

Black ink and graphite on thin off-white tracing paper

Graphite on off-white wove paper

Watercolor over graphite on off-white wove paper

Charcoal on off-white laid paper

Black ink and charcoal on cream laid paper

Graphite and ink on paper

Graphite and white pastel on gray-green laid paper

Black ink on cream wove paper

Black crayon and ink on paper

Opaque watercolor (black and red) and graphite on paper board

Graphite on off-white wove paper

Charcoal on off-white laid paper