Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Staircase: section, 1:50

Black ink over graphite on paper

Watercolor over graphite on off-white wove paper

Graphite on paper

Ink and graphite on paper

Graphite on off-white wove paper (recto and verso)

Charcoal and graphite on off-white laid paper

Ink and graphite sketches on commercially lined hole-punched paper

Black ink and charcoal on cream laid paper

Graphite on translucent wove paper

Graphite on buff wove paper

Black ink on cream wove paper

Graphite on white wove translucent paper