Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Plan type I, 1:50

Graphite on paper

Black ink on faded light-green wove paper

Graphite on brown laid paper

Verso: graphite on off-white laid paper

Black ink, white gouache, and black crayon on off-white laid paper

Graphite on buff wove paper

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

Watercolor and graphite on off-white wove paper

Black ink on slide film, hand colored

Graphite on translucent vellum paper

Black ink on tan wove paper

Graphite on paper