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

Brown ink on off-white wove paper, mounted to larger sheet of wove paper

Black and white conté crayon on gray modern laid paper

Graphite on off-white wove paper

Black chalk on off-white laid paper

Black ink on white wove paper

Beeswax, graphite, detritus and debris on wove paper

Graphite on paper

Watercolor and white gouache over graphite on heavy blue wove paper

Graphite on off-white wove paper

Watercolor and white gouache on blue wove paper, discolored

Graphite, gray wash, and yellow ink over graphite on off-white wove paper