"Haus Sonnenfang" Sanatorium, Berlin, 1931: North elevation, 1:500

Black crayon on paper

Colored marker on paper

Colored crayons on off-white wove paper

Black, blue, and red marker on paper

Black crayon on tan wove paper

Graphite on paper

Ballpoint ink with traces of red and blue pencil on off-white wove paper

Colored marker and black ink on paper

Black crayon on paper

Graphite and colored pencil on paper

Graphite on paper

Graphite on paper