High-Rise Steel Frame Apartment Building, 1929-1930: Upper floor plan, 1:100

Graphite on paper

Graphite on paper

Colored crayon on paper

Black crayon on paper

Black ink and gouache on cream wove paper

Brown, green, and purple crayon on paper

Graphite on paper

Graphite and green crayon ; graphite on paper

Paper

Charcoal on paper

Graphite on paper

Black and metallic marker and black pen on paper