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

Black ink on cream wove paper

Black marker on graph paper

Graphite and white crayon on blue-buff wove paper

Black ink and gray wash over graphite on off-white wove paper

Graphite on paper

Pastel on cardboard

Graphite on paper

Metallic paint, black ink and watercolor over graphite on heavy off-white wove paper; verso: graphite

Pen and ink and brush on white wove paper

Black ink and white-gray gouache on grayish-white textured wove paper

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

Watercolor on off-white wove paper