Office and Factory Buildings, Cali, Colombia, 1945: Office unit: plan, elevations, section (1/16" and 1/8" = 1'-0")

Mixed media on paper

Watercolor, white gouache and graphite on off-white cardboard

Graphite on cream wove paper

Graphite, black ink, and yellow chalk on darkened off-white wove paper

Black ink on tan wove paper

Watercolor on off-white wove paper

Black ink and wash, red, blue, and yellow watercolor on cream wove paper

Graphite on paper

Graphite and black ink on off-white wove paper

Watercolor over graphite on off-white wove paper

Graphite and gesso on paper

Graphite on paper