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

Mixed media

Black ink, partly over graphite, on cream laid paper.

Watercolor on paper

Paper

Colored marker on paper

Ink and colored crayons on paper

Graphite and colored crayons on off-white laid paper

Black crayon on paper

Black crayon on paper

Graphite on paper

Black, blue and yellow crayon on paper

Graphite and ink on paper