"Haus Sonnenfang" Sanatorium, Berlin, 1931: Fourth floor plan, 1:500

Black crayon on paper

Colored marker, paper, and adhesive on paper

Black marker on paper

Graphite and colored pencil on paper

Gray marker on paper

Graphite and blue crayon on paper

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Black crayon on paper

Black and red inks and applied type on paper

Graphite on paper

Black and colored crayons on paper