Office and Factory Buildings, Cali, Colombia, 1945: Office unit: plans, elevations, details (1 1/2" = 1'-0")

Graphite on paper

Graphite on blue wove paper

Watercolor over graphite on off-white cardboard

Charcoal on modern laid paper

Graphite on paper

Graphite on off-white wove paper

Black ink on off-white wove paper

Graphite on thin off-white wove paper

Graphite on off-white wove paper

Gray wash on off-white wove paper

Graphite on cream laid paper

Charcoal on off-white wove paper; verso: graphite