Bahner Residence, Berlin, Klein-Machnow, 1933: Stairway with railing: section and details, 1:20

Graphite on paper

Gray crayon on cream wove paper

Watercolor over graphite on thin cream laid paper

Ink and wash on paper

Graphite on paper

Black pen on paper

Black ink, black and colored crayons on cream laid paper

Green and black crayon on paper

Graphite on paper and mounted

Black marker on paper

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Black and red marker on paper