Bahner Residence, Berlin, Klein-Machnow, 1933: Staircase window: elevation and section, 1:20

Graphite and colored crayons on paper

Colored crayons on paper

Black marker on paper

Colored crayon on paper

Graphite on paper

Colored marker on paper

Graphite on paper and mounted

Graphite on paper

Black marker on paper

Graphite on back of letter

Black crayon on paper

Brown ink on off-white laid paper