"Haus Sonnenfang" Sanatorium, Berlin, 1931: Sketches of perspectives and plan

Black marker on paper

Graphite on off-white wove paper

Colored crayons on paper

Graphite on paper

Black and green marker on paper

Black ink and watercolor on cream laid paper

Colored marker on paper

Black and purple marker on paper

Colored crayons on paper

Graphite on paper

Graphite with applied type on paper

Graphite with brown, yellow, and purple crayon on paper