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

Charcoal, white pencil, white chalk, red watercolor (or ink) on off-white wove paper

Ink, gouache, and natural material on paper

Crayon on paper

Photographic reproduction of drawing

Black ink on machine made rag wove paper

Watercolor and white gouache over graphite on buff wove paper

Spiral-bound sketchbook with cardboard covers; twenty pages of off-white wove paper

Red ink (printed and drawn) and graphite on Kraft paper

Black ink, graphite, red pencil, and collage on off-white wove paper

Charcoal on blue laid paper

Pastel on off-white wove paper

Watercolor over graphite on off-white illustration board