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

Graphite, black ink, white & gray gouache, & black crayon on off-white wove ppr

Black, red, and white chalk, brown wash, and charcoal on off-white laid paper

White tempera on acetate, black ink on off-white and cream wove paper (collage)

Watercolor on heavy off-white wove paper

Graphite on off-white wove paper mounted to larger off-white wove paper

Watercolor and gouache on off-white illustration board

Graphite on paper

Black ink on cream wove paper

Charcoal on off-white wove paper

Graphite on off-white wove paper

Graphite on paper