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

Charcoal and purple and white chalk on brown wove paper

Black and white chalk on darkened buff laid paper

Graphite on paper

Graphite on paper

Graphite on darkened off-white wove paper

Black ink and graphite on off-white wove paper

Colored crayons on paper and mounted

Charcoal, oil stick, acrylic, and Liquid Paper on white wove paper

Black crayon on off-white wove paper

Graphite on off-white wove paper mounted on buff card

Watercolor on ruled off-white wove paper

Black fiber-tip ink on off-white wove paper