"Haus Sonnenfang" Sanatorium, Berlin, 1931: North elevation, 1:500

Black crayon on off-white wove paper

Graphite on paper

Graphite and crayon on paper

Blue and green crayon on paper

Graphite and colored pencil on paper

Black, green, and blue crayon on paper

Black ink on paper

Black marker on paper

Black crayon on paper

Olive crayon on paper

Graphite and crayons on paper

Blue marker on paper