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

Black ink on cream wove paper

Black ink on off-white rice paper

Graphite on off-white wove paper

Graphite on cream wove translucent paper

Black ink on off-white wove paper

Black crayon on paper

Graphite on buff wove paper

Black ink on graph paper

Watercolor over graphite on white wove paper

Acrylic paint and graphite on brown wove paper

Graphite on off-white wove paper

Graphite on paper