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

Black ink and graphite on cream wove paper

Black and colored crayon on off-white wove paper

Charcoal on off-white laid paper

Graphite on paper

Graphite on off-white wove paper

Enamel on offset lithograph

Graphite on off-white wove paper

Charcoal on off-white laid paper

Black crayon, fixed, on buff wove paper, mounted to modern laid paper

Graphite on white wove paper, sprayed with fixative

Black ink over graphite on off-white wove paper

Graphite on paper