Research Project on Economical Apartment Design, 1930: Table for heating installation

Black marker and black pen on paper, adhesive, and colored markers on paper

Colored marker, black pen, and adhesive tape on paper

Black crayon on off-white wove paper

Black crayon on paper

Black ballpoint ink and graphite on white wove paper

Ink on paper

Black crayon on paper

Black marker, black pen, and graphite on sheets of paper and adhesive on paper

Colored marker on paper

Black and gray marker on paper

Colored marker on paper

Graphite on green laid paper