Prefabricated Copper Houses, 1931-1932: Building type K0: basement and ground floor plans, 1:50

Black and red marker on paper

Black crayon and charcoal with smudging and touches of graphite on off-white wove paper

Graphite on paper

Ink and wash on paper

Black and red inks on brown wove paper

Graphite on paper

Black ink on cream wove paper

Graphite and colored pencil on paper

Black crayon on paper

Blue marker on paper

Colored crayons on paper

Graphite on paper