"Haus Sonnenfang" Sanatorium, Berlin, 1931: North and south elevations

Graphite on paper

Graphite and red colored pencil on cream wove paper

Graphite on paper

Black crayon on paper

Colored marker on paper

Brown crayon on paper

Blue ink on paper

Black crayon on paper

Graphite on paper

Black, brown and yellow crayon ; black and blue crayon on paper

Colored marker and opaque watercolor on paper

Graphite on paper