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

Black ink on two joined sheets of green prepared paper

Graphite on off-white wove paper mounted to board

Watercolor over graphite on off-white wove paper

Black ink and graphite on off-white wove paper; verso: black ink

Black ink and black wash on tan wove paper

Watercolor on ruled off-white wove paper

Watercolor over graphite on off-white wove paper

Graphite on off-white wove paper

Black ink on off-white wove paper (recto and verso)

Watercolor and graphite on white wove paper

Black ink, graphite and black type on commercially printed cream wove paper

Watercolor and white gouache over graphite on off-white wove paper