Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Balconies: perspective sketch

Graphite on paper

Sketchbook with cardboard covers and spiral wire binding

Brown ink, gray wash, and colored chalk over graphite on off-white cardboard

Black ink on off-white wove paper

Mixed media on paper

Graphite and brown crayon on off-white wove paper

Black ink on off-white wove paper

Charcoal on off-white laid paper

Charcoal and orange chalk on blue-gray laid paper

Black and red ink on hole-punched squared graph paper in mylar sheet protector

Graphite on paper

Black ink over graphite on cream board