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

Mixed media on paper

Colored pencil on off-white card

Black ink with graphite ruling lines on thin ivory laid paper

Watercolor on cream wove paper

Graphite on coated off-white wove paper

Watercolor and brown ink on cream illustration board

Graphite on off-white wove paper; verso: charcoal transfer

Watercolor over graphite on off-white wove paper

Black ink on white wove paper

Black ink on off-white wove paper

Charcoal on cream laid paper

Watercolor on off-white card