"Haus Sonnenfang" Sanatorium, Berlin, 1931: Sketches of perspectives and ground floor plan

Graphite and colored crayon on paper

Colored marker and green pen on paper

Light brown paper, black crayon, and adhesive on sketchbook paper

Black marker on paper

Graphite on paper

Ink, red wash, and gray gouache on paper

Crayon on paper

Graphite on tan wove paper

Graphite on paper

Black and red marker and red pen on tape on paper

Colored marker on paper

Paper