Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Staircase: plan, sections, details, 1:20, 1:5

Crayon on paper

Charcoal on cream laid paper

Black ink on off-white wove paper

Watercolor and graphite on white wove paper

Graphite on off-white wove paper

Black chalk over brown chalk on darkened off-white wove paper

Black ink, gray wash and wax crayon on off-white wove paper

Charcoal on blue laid paper

Graphite on translucent wove paper

Graphite on green wove paper, discolored

Graphite on cream colored commercially lined paper

Ink, marker, colored pencil and graphite on Strathmore folded in half