Office and Factory Buildings, Cali, Colombia, 1945: Office unit: plan, elevations, section (1/16" and 1/8" = 1'-0")

Graphite on off-white wove paper

Watercolor and graphite on layered cream wove paper

Charcoal and graphite on off-white laid paper

Graphite on white wove paper

Graphite on paper

Black chalk and charcoal on off-white laid paper

Graphite on paper

Graphite on paper

Ink and brown pencil on white wove paper

Graphite on paper

Watercolor over graphite on thin off-white wove paper

Graphite on off-white wove paper