Prefabricated Copper Houses, 1931-1932: Building type K1: perspective

Graphite on paper

Crayon on paper

Colored marker and blue pen on paper

Crayon on paper

Colored marker, black pen, b/w photocopy, and adhesive on paper

Gouache on brown wove paper

Graphite on paper

Graphite on paper

Charcoal on darkened cream laid paper

Graphite, watercolor and crayon on paper

Colored marker on paper

Colored marker on paper