"Haus Sonnenfang" Sanatorium, Berlin, 1931: First-third floor plan, 1:500

Black crayon on paper

Colored crayons on paper

Black marker on paper

Graphite on off-white wove paper

Graphite on paper

Black and red marker on paper

Black ink and charcoal on beige wove paper

Graphite on paper

Colored marker and blue pen on paper

Brown, blue and gray crayon on paper

Black marker on paper

Colored crayon on paper