Office and Factory Buildings, Cali, Colombia, 1945: Office unit: details (3/8" and 1" = 1'-0")

Charcoal on cream laid paper

Graphite on off-white wove paper

Watercolor over graphite on off-white wove paper

Black ink and colored chalk on thin buff wove paper

Crayon on paper

Black-brown ink on white wove paper

Opaque watercolor and black ink on off-white wove paper, framing corners in graphite

Graphite, yellow and black crayon, charcoal, blue-gray wash on off-white wove ppr

Black ink on off-white wove paper

Graphite on paper

Graphite, black and red felt-tipped pen on off-white wove paper

Black ink and charcoal on cream laid paper