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

Graphite on paper

Graphite on buff wove paper

Graphite and brown watercolor on cream wove paper

Acrylic, graphite, and computer print-out on off-white wove paper (12 drawings)

Graphite on off-white wove paper

Graphite on paper

Watercolor and graphite on white wove paper

Graphite on off-white wove paper (recto and verso)

Graphite on off-white wove paper

Black chalk and charcoal on off-white laid paper

Mixed media on paper

Watercolor, white gouache and graphite on off-white cardboard