Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Roof and gutter details, 1:10

Graphite on off-white laid paper

Graphite and ink on paper

Graphite on paper

Black ink and graphite on thin off-white wove paper

Watercolor and graphite on white wove paper

Black ink on off-white wove paper

Graphite on paper

Graphite and brown wash on buff laid paper

Watercolor and graphite on off-white wove paper

Crayon on paper

Oil on off-white wove paper

Watercolor and black ink on gampi paper