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

Sketchbook with cloth-covered cardboard covers

Black ink on tan wove paper

Graphite on off-white tracing paper

Watercolor and graphite on cream wove paper

Watercolor over graphite on buff wove paper

Black ink on cream wove paper

Blue-black ink on ivory wove paper

Graphite on graph paper

Watercolor and graphite on layered cream wove paper

Graphite on off-white card

Watercolor over graphite on off-white wove paper

Black ink and charcoal on cream laid paper