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

Opaque watercolor on tan wove paper

Graphite on paper

Graphite on tan wove paper

Graphite on paper

Colored marker on paper

Black marker, adhered paper, and blue pen on paper

Ink on paper

Black crayon on back of letter

Colored marker and adhesive stickers on paper

Paper

Graphite on off-white wove paper

Colored crayons on paper