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

Black ink on off-white wove paper

Beeswax, graphite, detritus and debris on wove paper

Black ink on thin off-white wove paper (recto and verso)

Incised line and Aquarelle on white wove paper

Graphite on glossy off-white wove paper

Red conte crayon on cream wove paper

Pastel on paper

Black ink on modern laid paper

Black ink and white-gray gouache on grayish-white textured wove paper

Sketchbook with cardboard covers and spiral wire binding

Black ink and charcoal on cream laid paper, edges taped

Black ink on off-white wove paper (recto and verso)