"Haus Sonnenfang" Sanatorium, Berlin, 1931: Ground floor plan

Colored marker on paper

Black marker on paper

Ink, applied type, and typewritten text on paper

Graphite on paper

Graphite on paper

Watercolor on off-white laid paper

Graphite and colored crayons on paper

Graphite on white wove paper

Charcoal and black chalk on off-white modern laid paper

Colored marker and blue pen on paper

Graphite on paper

Black and red marker on paper