"Haus Sonnenfang" Sanatorium, Berlin, 1931: East and west elevations

Pencil and watercolor on machine made wove paper

Black, blue, and yellow crayon on paper

Black crayon on paper

Graphite with blue and gray crayon on paper

Graphite and colored pencil on paper

Colored marker on paper

Opaque and transparent watercolor, graphite, and black ink on cream card

Graphite on cream wove paper

Pink crayon; verso: purple crayon on paper

Black marker on paper

Graphite on paper

Black crayon on paper and mounted