Office and Factory Buildings, Cali, Colombia, 1945: Details: hose house plan, elevation, section (1/2" and 1'=1'-0")

Graphite, watercolor and red crayon on cream wove paper

Red, brown, black and white conté crayon on gray wove paper

Graphite on cream wove paper

Watercolor on ruled off-white wove paper

Graphite and watercolor on off-white wove paper

Graphite on buff wove paper

Watercolor on darkened cream wove paper

Watercolor over graphite on heavy off-white wove paper

Graphite on off-white wove paper

Pastel over traces of charcoal on gray wove paper

Silverpoint on off-white prepared paper

Watercolor and white gouache over graphite on off-white wove paper