Office and Factory Buildings, Cali, Colombia, 1945: Office unit: construction and millwork details (1/4", 1", 1 1/2" and 6" = 1'-0")

Watercolor over graphite on off-white wove paper

Brown wash, watercolor, and white gouache on beige fabric

Charcoal on paper

Graphite on off-white wove paper

Graphite on paper

Ink wash, black chalk, graphite, and white gouache on cream laid paper

Graphite and gray and brown wash on off-white wove paper

Charcoal on off-white laid paper

Watercolor and graphite on white wove paper

Graphite on darkened off-white tracing paper

Graphite on paper

Black conté crayon on ivory tracing paper