Bahner Residence, Berlin, Klein-Machnow, 1933: Heating installation plans, 1:50

Graphite on paper

Black pen on ruled paper, adhesive, and black marker on paper

Black ink and opaque watercolor on paper

Colored marker on paper

Black crayon and ink on paper

Colored marker on paper

Graphite on paper

Black, blue and pink crayon ; colored crayons on paper

Graphite on off-white wove paper

Colored crayon on paper

gray ink on off-white laid paper

Paper