Apartment House for Interbau Exhibition, Berlin-Hansaviertel, 1955-1957: Sketch of plan

Black ink and charcoal on cream laid paper

Black ink on tan wove paper

Graphite on paper

Charcoal on heavy off-white wove paper, mounted to another sheet

Gouache and charcoal (?) on cream wove paper

Brown and ochre ink, varnished (?) in some areas, on handmade off-white Mexican bark paper

Watercolor and graphite on off-white wove paper

Black crayon on paper

Black ink and wash, red, blue, and yellow watercolor on cream wove paper

Colored crayons on paper

Crayon on paper

Transparent and opaque watercolor over graphite on cream moderately textured wove paper