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

Graphite on off-white wove paper

Graphite on paper

Graphite and gesso on paper

Black ink and graphite on cream wove paper

Graphite on paper

Watercolor and brown ink over graphite on off-white wove paper

Charcoal on off-white laid paper

Gray wash on off-white paper mounted on light card

Graphite on paper

Sketchbook with cardboard covers and spiral wire binding

Graphite on off-white wove paper

Black ink and gray wash on off-white wove paper