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

Black ink and watercolor pencil on cream laid paper, edges taped

Black ink on cream wove paper

Watercolor, black ink, and charcoal on cream modern laid paper, edges taped

Watercolor and white gouache over graphite on off-white illustration board

Watercolor over graphite on off-white wove paper; verso: graphite

Graphite on off-white wove paper

Black ink on off-white wove paper

Black ink and white gouache on thin off-white laid paper

Graphite on off-white wove paper

Album with black cloth-covered cardboard covers, and thirty drawings

Black ink on off-white wove paper

Graphite on paper