"Haus Sonnenfang" Sanatorium, Berlin, 1931: Basement plan, 1:500

Black and colored crayons on paper

Colored marker on paper

Graphite on cream wove paper

Colorer marker (transfer) on paper

Black and red marker and black pen on paper

Crayon on paper

Colored crayons on paper

Graphite on paper

Graphite on white laid paper

Graphite on paper

Black and aqua marker on paper

Graphite on paper