Office and Factory Buildings, Cali, Colombia, 1945: Plot plan and elevation (1" =50')

Black ink over graphite on cream laid paper

Graphite on off-white wove paper

Black ink on off-white wove paper

Graphite on paper

Transparent and opaque watercolor on beige paperboard

Watercolor over graphite on buff laid paper

Sketchbook with cardboard backing, heavy paper cover, and spiral wire binding

Black ink, graphite, colored chalk on off-white wove paper; verso: black ink

Graphite on paper

Black ink and gray wash on cream laid paper

Gray wash on off-white wove paper

Black ink on thin buff wove paper